Quarterly report pursuant to Section 13 or 15(d)

Contract Costs - Additional Information (Detail)

v3.3.0.814
Contract Costs - Additional Information (Detail)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
USD ($)
Customer
Sep. 30, 2014
Sep. 30, 2015
USD ($)
Customer
Sep. 30, 2014
Dec. 31, 2014
USD ($)
Long-term Contracts or Programs Disclosure [Line Items]          
Pass-through costs as a percentage of revenue 45.30% 42.60% 43.20% 47.80%  
Costs and estimated earnings in excess of billings on uncompleted contracts, unbilled costs $ 27,226   $ 27,226   $ 26,989
Billings in excess of costs and estimated earnings, advances 5,272   5,272   $ 18,766
Large Deepwater Customer          
Long-term Contracts or Programs Disclosure [Line Items]          
Loss on contracts 14,300        
Unbilled Contract Costs          
Long-term Contracts or Programs Disclosure [Line Items]          
Costs and estimated earnings in excess of billings on uncompleted contracts, unbilled costs $ 16,400   $ 16,400    
Number of major customers | Customer 4   4    
Contract Advances          
Long-term Contracts or Programs Disclosure [Line Items]          
Number of major customers | Customer 3   3    
Billings in excess of costs and estimated earnings, advances $ 3,400   $ 3,400