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Costs And Estimated Earnings On Uncompleted Contracts (Narrative) (Details) | 9 Months Ended |
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Sep. 30, 2014 customer | Dec. 31, 2013
Costs And Estimated Earnings On Uncompleted Contracts [Abstract] |  |
Costs and estimated earnings in excess of billings on uncompleted contracts, net of billings in excess of costs and estimated earnings, percentage comprised by significant customers | 87.80% | 89.60%
Number of significant customers | 8 |

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