Costs And Estimated Earnings On Uncompleted Contracts (Narrative) (Details)	12 Months Ended
	Dec. 31, 2013 customer	Dec. 31, 2012 customer
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	89.60%	86.50%
Number of significant customers	8	5