XML 59 R49.htm IDEA: XBRL DOCUMENT v3.5.0.2
Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 489,017 $ 469,748
Accumulated Amortization (291,461) (264,674)
Intangible Assets, Net $ 197,556 205,074
Remaining Weighted Average Amortization Period in Years 10 years 6 months  
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 247,252 236,731
Accumulated Amortization (106,586) (90,840)
Intangible Assets, Net $ 140,666 145,891
Remaining Weighted Average Amortization Period in Years 8 years 10 months 24 days  
Backlog [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 134,579 130,818
Accumulated Amortization (132,082) (126,954)
Intangible Assets, Net $ 2,497 3,864
Remaining Weighted Average Amortization Period in Years 9 months 18 days  
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 55,260 51,192
Accumulated Amortization (12,144) (9,525)
Intangible Assets, Net $ 43,116 41,667
Remaining Weighted Average Amortization Period in Years 17 years 9 months 18 days  
Non-compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 29,425 28,560
Accumulated Amortization (25,291) (23,507)
Intangible Assets, Net $ 4,134 5,053
Remaining Weighted Average Amortization Period in Years 3 years 2 months 12 days  
Patented Rights and Developed Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets subject to amortization $ 22,501 22,447
Accumulated Amortization (15,358) (13,848)
Intangible Assets, Net $ 7,143 $ 8,599
Remaining Weighted Average Amortization Period in Years 4 years 4 months 24 days