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v3.23.1

Fair Value Measurements (Additional Information) (Details) $ in Thousands | Dec. 31, 2022 USD ($)
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Fair Value Disclosures [Abstract] |
Balance Other Real Estate Owned | $ 108

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- Definition Balance Other Real Estate Owned + References No definition available. + Details
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Namespace Prefix: | efsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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