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Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 469,748 $ 468,951
Accumulated Amortization (264,674) (225,367)
Intangible Assets, Net $ 205,074 243,584
Remaining Weighted Average Amortization Period in Years 10 years 10 months 24 days  
Customer Relationships [Member]    
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 236,731 235,851
Accumulated Amortization (90,840) (63,764)
Intangible Assets, Net $ 145,891 172,087
Remaining Weighted Average Amortization Period in Years 9 years 8 months 12 days  
Backlog [Member]    
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 130,818 133,704
Accumulated Amortization (126,954) (122,265)
Intangible Assets, Net $ 3,864 11,439
Remaining Weighted Average Amortization Period in Years 8 months 12 days  
Trade Names [Member]    
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 51,192 49,664
Accumulated Amortization (9,525) (6,278)
Intangible Assets, Net $ 41,667 43,386
Remaining Weighted Average Amortization Period in Years 18 years 7 months 6 days  
Non-compete Agreements [Member]    
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 28,560 27,659
Accumulated Amortization (23,507) (21,365)
Intangible Assets, Net $ 5,053 6,294
Remaining Weighted Average Amortization Period in Years 3 years 6 months  
Patented Rights and Developed Technology [Member]    
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 22,447 22,073
Accumulated Amortization (13,848) (11,695)
Intangible Assets, Net $ 8,599 $ 10,378
Remaining Weighted Average Amortization Period in Years 4 years