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Goodwill And Identified Intangible Assets - Identified Intangible Assets (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Accumulated Amortization $ (168,100) $ (139,546)
Intangible assets, gross 681,425 681,425
Intangible assets, net 513,325 541,879
In Process Research and Development    
Finite-Lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets 3,156 3,156
Acquired Patents Core Technology    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 140,744 140,744
Accumulated Amortization (101,365) (96,896)
Net $ 39,379 43,848
Acquired Patents Core Technology | Minimum    
Finite-Lived Intangible Assets [Line Items]    
Average Life (Years) 3 years  
Acquired Patents Core Technology | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Average Life (Years) 15 years  
Existing Technology    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross $ 203,442 203,442
Accumulated Amortization (35,850) (27,315)
Net $ 167,592 176,127
Existing Technology | Minimum    
Finite-Lived Intangible Assets [Line Items]    
Average Life (Years) 5 years  
Existing Technology | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Average Life (Years) 10 years  
Customer contracts and related relationships    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross $ 291,769 291,769
Accumulated Amortization (27,761) (14,011)
Net $ 264,008 277,758
Customer contracts and related relationships | Minimum    
Finite-Lived Intangible Assets [Line Items]    
Average Life (Years) 3 years  
Customer contracts and related relationships | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Average Life (Years) 9 years  
Trademarks/trade name    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross $ 40,083 40,083
Accumulated Amortization (2,381) (1,138)
Net $ 37,702 38,945
Trademarks/trade name | Minimum    
Finite-Lived Intangible Assets [Line Items]    
Average Life (Years) 4 years  
Trademarks/trade name | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Average Life (Years) 10 years  
Non-competition agreements    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross $ 2,231 2,231
Accumulated Amortization (743) (186)
Net $ 1,488 2,045
Average Life (Years) 1 year  
Noncompete Agreements    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross $ 678,269 678,269
Accumulated Amortization (168,100) (139,546)
Net $ 510,169 $ 538,723