Annual report pursuant to Section 13 and 15(d)

Contracts in Progress (Details)

v3.8.0.1
Contracts in Progress (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Revenue earned on uncompleted contracts $ 557,164 $ 532,549
Less: Billings to date (552,701) (539,780)
Costs and estimated earnings in excess of billing on uncompleted contracts 33,006 31,959
Billings in excess of costs and estimated earnings on uncompleted contracts (28,543) (39,190)
Net underbilling (overbilling) $ 4,463 $ (7,231)