XML 54 R40.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Loans - Summary of Portfolio Loans Individually Evaluated for Impairment by Category (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2017 | Mar. 31, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Dec. 31, 2016
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, Related Allowance |  |  |  | $ 1,200 |
Portfolio loans, net |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | $ 3,623 | $ 1,533 | $ 2,422 |  |
Unpaid Contractual Principal Balance |  |  |  | 15,660 | $ 15,057
Recorded Investment With No Allowance |  |  |  | 7,656 | 3,241
Recorded Investment With Allowance |  |  |  | 1,329 | 12,150
Total Recorded Investment |  |  |  | 8,985 | 15,391
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  |  |  | 2,417 | 3,064
Impaired Financing Receivable, Related Allowance |  |  |  | 2,374 | 3,064
Average Recorded Investment |  |  |  | 13,290 | 7,366
Financing Receivable, Allowance for Credit Losses, Write-downs | (6,389) | (171) | (1,236) |  |
Financing Receivable, Allowance for Credit Losses, Recovery | 291 | 221 | 433 |  |
Financing Receivable, Allowance for Credit Losses | 36,673 | 39,148 | 38,292 | 38,292 | 37,565
Portfolio loans, net | Commercial and industrial |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 2,955 | 1,835 | 1,126 |  |
Unpaid Contractual Principal Balance |  |  |  | 13,981 | 12,341
Recorded Investment With No Allowance |  |  |  | 6,407 | 566
Recorded Investment With Allowance |  |  |  | 1,044 | 11,791
Total Recorded Investment |  |  |  | 7,451 | 12,357
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  |  |  | 2,063 | 2,909
Impaired Financing Receivable, Related Allowance |  |  |  | 2,020 | 2,909
Average Recorded Investment |  |  |  | 11,735 | 4,489
Financing Receivable, Allowance for Credit Losses, Write-downs | (6,035) | (133) | (613) |  |
Financing Receivable, Allowance for Credit Losses, Recovery | 57 | 80 | 205 |  |
Financing Receivable, Allowance for Credit Losses | 25,755 | 28,778 | 26,473 | 26,473 | 26,996
Portfolio loans, net | Commercial - owner occupied |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | (354) | (249) | 245 |  |
Unpaid Contractual Principal Balance |  |  |  | 0 | 225
Recorded Investment With No Allowance |  |  |  | 0 | 231
Recorded Investment With Allowance |  |  |  | 0 | 0
Total Recorded Investment |  |  |  | 0 | 231
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  |  |  | 0 | 0
Impaired Financing Receivable, Related Allowance |  |  |  | 0 | 0
Average Recorded Investment |  |  |  | 0 | 227
Financing Receivable, Allowance for Credit Losses, Write-downs | (45) | 0 | (45) |  |
Financing Receivable, Allowance for Credit Losses, Recovery | 1 | 89 | 6 |  |
Financing Receivable, Allowance for Credit Losses | 3,040 | 2,730 | 3,246 | 3,246 | 2,890
Portfolio loans, net | Commercial - investor owned |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 39 | (105) | 376 |  |
Unpaid Contractual Principal Balance |  |  |  | 562 | 525
Recorded Investment With No Allowance |  |  |  | 259 | 435
Recorded Investment With Allowance |  |  |  | 285 | 0
Total Recorded Investment |  |  |  | 544 | 435
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  |  |  | 120 | 0
Impaired Financing Receivable, Related Allowance |  |  |  | 120 | 0
Average Recorded Investment |  |  |  | 542 | 668
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 0 | 0 |  |
Financing Receivable, Allowance for Credit Losses, Recovery | 102 | 9 | 12 |  |
Financing Receivable, Allowance for Credit Losses | 3,387 | 3,324 | 3,775 | 3,775 | 3,420
Portfolio loans, net | Construction and land development |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 51 | (11) | 305 |  |
Unpaid Contractual Principal Balance |  |  |  | 444 | 1,904
Recorded Investment With No Allowance |  |  |  | 322 | 1,947
Recorded Investment With Allowance |  |  |  | 0 | 359
Total Recorded Investment |  |  |  | 322 | 2,306
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  |  |  | 186 | 155
Impaired Financing Receivable, Related Allowance |  |  |  | 186 | 155
Average Recorded Investment |  |  |  | 337 | 1,918
Financing Receivable, Allowance for Credit Losses, Write-downs | (5) | 0 | 0 |  |
Financing Receivable, Allowance for Credit Losses, Recovery | 49 | 9 | 25 |  |
Financing Receivable, Allowance for Credit Losses | 1,295 | 1,302 | 1,625 | 1,625 | 1,304
Portfolio loans, net | Residential real estate |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 451 | (3) | 299 |  |
Unpaid Contractual Principal Balance |  |  |  | 673 | 62
Recorded Investment With No Allowance |  |  |  | 668 | 62
Recorded Investment With Allowance |  |  |  | 0 | 0
Total Recorded Investment |  |  |  | 668 | 62
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  |  |  | 48 | 0
Impaired Financing Receivable, Related Allowance |  |  |  | 48 | 0
Average Recorded Investment |  |  |  | 676 | 64
Financing Receivable, Allowance for Credit Losses, Write-downs | (265) | (9) | (503) |  |
Financing Receivable, Allowance for Credit Losses, Recovery | 62 | 25 | 172 |  |
Financing Receivable, Allowance for Credit Losses | 2,284 | 2,036 | 2,252 | 2,252 | 2,023
Portfolio loans, net | Consumer and other |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | (47) | 66 | 71 |  |
Unpaid Contractual Principal Balance |  |  |  | 0 | 0
Recorded Investment With No Allowance |  |  |  | 0 | 0
Recorded Investment With Allowance |  |  |  | 0 | 0
Total Recorded Investment |  |  |  | 0 | 0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  |  |  | 0 | 0
Impaired Financing Receivable, Related Allowance |  |  |  | 0 | 0
Average Recorded Investment |  |  |  | 0 | 0
Financing Receivable, Allowance for Credit Losses, Write-downs | (39) | (29) | (75) |  |
Financing Receivable, Allowance for Credit Losses, Recovery | 20 | 9 | 13 |  |
Financing Receivable, Allowance for Credit Losses | $ 912 | $ 978 | $ 921 | $ 921 | $ 932

X
- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_ProvisionForLoanLeaseAndOtherLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | efsc_LoansByMajorCategoryAxis=efsc_NoncoveredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=efsc_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=efsc_CommercialRealEstateOwnerOccupiedFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=efsc_CommercialRealEstateInvestorOwnedFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=efsc_ConstructionAndLandDevelopmentFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=efsc_ResidentialRealEstateFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=efsc_ConsumerAndOtherPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |