v2.4.0.8
Intangible Assets (Intangible Assets Other Than Goodwill) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, Gross $ 206,777 $ 166,939
Intangible assets, Accumulated Amortization (67,148) (58,562)
Intangible assets, Net 139,629 108,377
Trademarks [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets 2,110 2,770
Licenses [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets with finite lives: Gross 5,875 5,875
Intangible assets with finite lives: Accumulated Amortization (5,875) (5,875)
Patent Costs [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets with finite lives: Gross 30,335 27,635
Intangible assets with finite lives: Accumulated Amortization (14,306) (14,047)
Intangible assets with finite lives: Net 16,029 13,588
Acquired Technology [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets with finite lives: Gross 26,201 26,262
Intangible assets with finite lives: Accumulated Amortization (12,599) (11,852)
Intangible assets with finite lives: Net 13,602 14,410
Internally Developed Software [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets with finite lives: Gross 17,847 17,847
Intangible assets with finite lives: Accumulated Amortization (12,143) (11,424)
Intangible assets with finite lives: Net 5,704 6,423
Intangible assets, useful life 5 years  
Customer Relationships [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets with finite lives: Gross 89,587 60,329
Intangible assets with finite lives: Accumulated Amortization (12,011) (7,754)
Intangible assets with finite lives: Net 77,576 52,575
Non-Compete Agreements [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets with finite lives: Gross 15,087 14,051
Intangible assets with finite lives: Accumulated Amortization (5,203) (3,836)
Intangible assets with finite lives: Net 9,884 10,215
Trade Names [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets with finite lives: Gross 8,529 5,814
Intangible assets with finite lives: Accumulated Amortization (1,375) (723)
Intangible assets with finite lives: Net 7,154 5,091
Other [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets with finite lives: Gross 11,206 6,356
Intangible assets with finite lives: Accumulated Amortization (3,636) (3,051)
Intangible assets with finite lives: Net $ 7,570 $ 3,305
Minimum [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 1 year  
Minimum [Member] | Patent Costs [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 6 years  
Minimum [Member] | Acquired Technology [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 5 years  
Minimum [Member] | Customer Relationships [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 5 years  
Minimum [Member] | Non-Compete Agreements [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 3 years  
Minimum [Member] | Trade Names [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 2 years  
Minimum [Member] | Other [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 1 year  
Maximum [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 13 years  
Maximum [Member] | Patent Costs [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 7 years  
Maximum [Member] | Acquired Technology [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 10 years  
Maximum [Member] | Customer Relationships [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 13 years  
Maximum [Member] | Non-Compete Agreements [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 11 years  
Maximum [Member] | Trade Names [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 10 years  
Maximum [Member] | Other [Member]
   
Finite And Indefinite Lived Intangible Assets [Line Items]    
Intangible assets, useful life 7 years