XML 64 R48.htm IDEA: XBRL DOCUMENT v3.6.0.2
Summary of Significant Accounting Policies - Schedule of costs and estimated earnings on uncompleted contracts and related amounts billed (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Accounting Policies [Abstract]      
Costs incurred on uncompleted contracts $ 7,223,436 $ 7,582,108  
Estimated earnings, thereon 827,799 862,987  
Costs and estimated earnings on uncompleted contracts 8,051,235 8,445,095  
Less: billings to date 8,409,780 8,756,596  
Net billings in excess of costs (358,545) (311,501)  
Costs and estimated earnings in excess of billings on uncompleted contracts 130,697 117,734 $ 103,201
Billings in excess of costs and estimated earnings on uncompleted contracts $ (489,242) $ (429,235) $ (368,555)