XML 77 R63.htm IDEA: XBRL DOCUMENT
v3.19.1

Allowance for Loan Losses (Narrative) (Details) $ in Thousands | Dec. 31, 2018 USD ($) loan | Dec. 31, 2017 USD ($) loan
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Credit Quality Loans And Leases Receivable Gross Carrying Amount | $ 598,845 | $ 559,051
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Credit Quality Loans And Leases Receivable Gross Carrying Amount | $ 6,148 | $ 8,351
Consumer Installment [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Credit Quality Loans And Leases Receivables Number Of Loans | loan | 0 | 3
Credit Quality Loans And Leases Receivable Gross Carrying Amount |  | $ 13

X
- Definition Credit Quality Loans And Leases Receivable Gross Carrying Amount + References No definition available. + Details
Name: | efsi_CreditQualityLoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | efsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Credit Quality Loans And Leases Receivables Number Of Loans + References No definition available. + Details
Name: | efsi_CreditQualityLoansAndLeasesReceivablesNumberOfLoans
Namespace Prefix: | efsi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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