XML 115 R105.htm IDEA: XBRL DOCUMENT v3.24.1

Fair Value Measurements (Quantitative Information About Level 3 Fair Value Measurements For Certain Financial Assets) (Details) - Other Real Estate Owned	12 Months Ended
	Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Quantitative information about Level 3 Fair Value Measurements	6.00%
Measurement Input, Discount for selling costs
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Quantitative information about Level 3 Fair Value Measurements	6.00%

X

- Definition

Quantitative Information Level Three Nonrecurring Basis Range

+ References

No definition available.

+ Details

Name:	efsi_QuantitativeInformationLevelThreeNonrecurringBasisRange
Namespace Prefix:	efsi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=efsi_OtherRealEstateOwnedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=efsi_MeasurementInputDiscountForSellingCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: