Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangible Assets - Other Intangible Assets (Detail)

v2.4.0.6
Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Finite And Indefinite Lived Intangible Assets [Line Items]      
Remaining Weighted Average Amortization Period in Years 12 years 10 months 24 days    
Intangible assets   $ 356,372  
Intangible assets, gross   360,872  
Indefinite-lived Intangible Assets, Beginning Balance 4,500    
Addition to indefinite lived intangible assets       
Accumulated Amortization (198,082) (159,996)  
Indefinite-lived Intangible Assets, Ending Balance 4,500 4,500  
Amortization Expense (37,691) (29,039) (37,655)
Additions 19,472    
Foreign Currency Adjustments 1,179    
Intangible assets, net 183,836 200,876  
Intangible Assets, Net, subject to amortization 179,336    
Customer Relationships [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Remaining Weighted Average Amortization Period in Years 11 years 2 months 12 days    
Intangible assets   164,259  
Accumulated Amortization   (36,300)  
Amortization Expense (11,180)    
Additions 5,311    
Foreign Currency Adjustments 598    
Intangible Assets, Net, subject to amortization 122,688    
Backlog [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Remaining Weighted Average Amortization Period in Years 2 years 1 month 6 days    
Intangible assets   120,682  
Accumulated Amortization   (100,056)  
Amortization Expense (18,944)    
Additions 4,906    
Foreign Currency Adjustments 401    
Intangible Assets, Net, subject to amortization 6,989    
Trade Names [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Remaining Weighted Average Amortization Period in Years 27 years 2 months 12 days    
Intangible assets   29,661  
Accumulated Amortization   (1,948)  
Amortization Expense (1,064)    
Additions 2,768    
Foreign Currency Adjustments 128    
Intangible Assets, Net, subject to amortization 29,545    
Non-compete Agreements [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Remaining Weighted Average Amortization Period in Years 3 years 2 months 12 days    
Intangible assets   25,392  
Accumulated Amortization   (16,154)  
Amortization Expense (4,523)    
Additions 1,926    
Foreign Currency Adjustments 59    
Intangible Assets, Net, subject to amortization 6,700    
Patented Rights and Developed Technology [Member]
      
Finite And Indefinite Lived Intangible Assets [Line Items]      
Remaining Weighted Average Amortization Period in Years 6 years 9 months 18 days    
Intangible assets   16,378  
Accumulated Amortization   (5,538)  
Amortization Expense (1,980)    
Additions 4,561    
Foreign Currency Adjustments (7)    
Intangible Assets, Net, subject to amortization $ 13,414