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Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Finite And Indefinite Lived Intangible Assets [Line Items]      
Intangible assets subject to amortization   $ 377,418  
Intangible assets, gross   381,918  
Accumulated Amortization (223,355) (198,082)  
Amortization Expense (27,515) (37,691) (29,039)
Additions 55,124    
Foreign Currency Adjustments (3,568)    
Intangible Assets Subject to Amortization, Net 203,377    
Intangible assets, net 207,877 183,836  
Remaining Weighted Average Amortization Period in Years 11 years 9 months 18 days    
Indefinite-lived Intangible Assets 4,500 4,500  
Customer Relationships [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Intangible assets subject to amortization   170,465  
Accumulated Amortization   (47,777)  
Amortization Expense (12,096)    
Additions 31,854    
Foreign Currency Adjustments (2,639)    
Intangible Assets Subject to Amortization, Net 139,807    
Remaining Weighted Average Amortization Period in Years 10 years 4 months 24 days    
Backlog [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Intangible assets subject to amortization   126,057  
Accumulated Amortization   (119,068)  
Amortization Expense (9,698)    
Additions 12,405    
Foreign Currency Adjustments (98)    
Intangible Assets Subject to Amortization, Net 9,598    
Remaining Weighted Average Amortization Period in Years 1 year 3 months 18 days    
Trade Names [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Intangible assets subject to amortization   32,559  
Accumulated Amortization   (3,014)  
Amortization Expense (1,251)    
Additions 8,321    
Foreign Currency Adjustments (501)    
Intangible Assets Subject to Amortization, Net 36,114    
Remaining Weighted Average Amortization Period in Years 23 years 10 months 24 days    
Non-compete Agreements [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Intangible assets subject to amortization   27,406  
Accumulated Amortization   (20,706)  
Amortization Expense (2,368)    
Additions 1,944    
Foreign Currency Adjustments (241)    
Intangible Assets Subject to Amortization, Net 6,035    
Remaining Weighted Average Amortization Period in Years 3 years 1 month 6 days    
Patented Rights and Developed Technology [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Intangible assets subject to amortization   20,931  
Accumulated Amortization   (7,517)  
Amortization Expense (2,102)    
Additions 600    
Foreign Currency Adjustments (89)    
Intangible Assets Subject to Amortization, Net $ 11,823    
Remaining Weighted Average Amortization Period in Years 5 years 1 month 6 days