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General (Details) | Sep. 30, 2012
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General [Abstract] |
Ownership percentage in subsidiaries | 100.00%

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- Definition Consolidated Financial Ownership Wholly Owned Subsidiary Percentage + References No definition available. + Details
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Namespace Prefix: | efsi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
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Balance Type: | na
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