Annual report pursuant to Section 13 and 15(d)

Balance Sheet Details - Intangible Assets (Detail)

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Balance Sheet Details - Intangible Assets (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]      
Weighted average amortization period in years 6 years 1 month 6 days    
Intangibles assets, Gross $ 377,031 $ 379,631  
Less accumulated amortization (136,531) (68,986)  
Intangible assets, net 240,500 310,645 $ 81,861
Intangible Assets, Net (Excluding Goodwill) 244,900 315,045  
Amortization of Intangible Assets $ 67,947 54,694 $ 16,084
Licensed Technology [Member]      
Finite-Lived Intangible Assets [Line Items]      
Weighted average amortization period in years 3 years 8 months 12 days    
Intangibles assets, Gross $ 2,070 2,070  
Less accumulated amortization (1,130) (575)  
Intangible assets, net $ 940 1,495  
Developed Technology Rights [Member]      
Finite-Lived Intangible Assets [Line Items]      
Weighted average amortization period in years 6 years 10 months 24 days    
Intangibles assets, Gross $ 238,961 241,561  
Less accumulated amortization (74,630) (39,252)  
Intangible assets, net $ 164,331 202,309  
Trademarks and Trade Names [Member]      
Finite-Lived Intangible Assets [Line Items]      
Weighted average amortization period in years 6 years 1 month 6 days    
Intangibles assets, Gross $ 13,800 13,800  
Less accumulated amortization (4,252) (1,992)  
Intangible assets, net $ 9,548 11,808  
Customer Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Weighted average amortization period in years 4 years 7 months 6 days    
Intangibles assets, Gross $ 121,100 121,100  
Less accumulated amortization (55,647) (26,661)  
Intangible assets, net $ 65,453 $ 94,439