XML 109 R92.htm IDEA: XBRL DOCUMENT v2.4.0.6

Employee Benefits (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Matched percentage by employer	50.00%
Maximum employee percentage of deferred salary matched by employer	6.00%
Employer contributions	$ 867	$ 739	$ 668
Non-elective safe-harbor contribution received each December 31st	3.00%
Maximum age benefit could be reduced or forfeited	65 years
Supplemental income benefit liability	121	146
Supplemental income benefit expense	$ 16	$ 13	$ 13
Maximum [Member]
Non-elective safe-harbor contribution received each December 31st	10.00%
Minimum [Member]
Non-elective safe-harbor contribution received each December 31st	1.00%

X

- Definition

Executive Supplemental Income Benefit Expense

+ References

No definition available.

+ Details

Name:	efsi_ExecutiveSupplementalIncomeBenefitExpense
Namespace Prefix:	efsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Executive Supplemental Income Benefit Liability

+ References

No definition available.

+ Details

Name:	efsi_ExecutiveSupplementalIncomeBenefitLiability
Namespace Prefix:	efsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Maximum Age Benefits Can Be Reduced Or Forfeited Due To Employment Termination

+ References

No definition available.

+ Details

Name:	efsi_MaximumAgeBenefitsCanBeReducedOrForfeitedDueToEmploymentTermination
Namespace Prefix:	efsi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Non Elective Safe Harbor Employer Contribution And Age Weighted Employer Contribution Percent

+ References

No definition available.

+ Details

Name:	efsi_NonElectiveSafeHarborEmployerContributionAndAgeWeightedEmployerContributionPercent
Namespace Prefix:	efsi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration