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Summary Of Significant Accounting Policies (Schedule Of Percentage Of Company's Total Revenues) (Details)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Georgia [Member]
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| Percentage of revenues under contracts or subcontracts | 15.00% | ||
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Ohio [Member]
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| Percentage of revenues under contracts or subcontracts | 12.00% | ||
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Texas [Member]
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| Percentage of revenues under contracts or subcontracts | 37.00% | 40.00% | 21.00% |