XML 116 R105.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Fair Value Measurements (Quantitative Information About Level 3 Fair Value Measurements For Certain Financial Assets) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2012
Maximum [Member] | Impaired Loans [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Quantitative information about level 3 nonrecurring basis | 25.00%
Maximum [Member] | Other Real Estate Owned [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Quantitative information about level 3 nonrecurring basis | 12.00%
Minimum [Member] | Impaired Loans [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Quantitative information about level 3 nonrecurring basis | 6.00%
Minimum [Member] | Other Real Estate Owned [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Quantitative information about level 3 nonrecurring basis | 6.00%

X
- Definition Quantitative Information Level Three Nonrecurring Basis Range + References No definition available. + Details
Name: | efsi_QuantitativeInformationLevelThreeNonrecurringBasisRange
Namespace Prefix: | efsi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration