Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets Goodwill and Intangibles Other (Details 1)

v3.8.0.1
Goodwill and Intangible Assets Goodwill and Intangibles Other (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 68,041    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 57,191    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 56,325    
2019 55,542    
2020 38,012    
Transfers into developed technology from IPR&D 5,378 $ 390  
Amortization of Intangible Assets $ (54,694) (16,084) $ (29,931)
Finite-Lived Intangible Asset, Useful Life 6 years 1 month 6 days    
Intangibles assets, Gross $ 379,631 103,711  
Finite-Lived Intangible Assets, Accumulated Amortization (68,986) (21,850)  
Finite-Lived Intangible Assets, Net 310,645 81,861 48,155
Finite-Lived Intangible Assets, Amortization Expense, after Year Five 35,534    
Assets, Total [Member]      
Finite-Lived Intangible Assets [Line Items]      
Intangible Assets, Transfer from IPRD to Developed Tech $ 32,600 3,100  
Licensed Technology [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 3 years 8 months 12 days    
Intangibles assets, Gross $ 2,070 3,311  
Finite-Lived Intangible Assets, Accumulated Amortization (575) (2,957)  
Finite-Lived Intangible Assets, Net $ 1,495 354  
Developed Technology Rights [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 6 years 10 months 24 days    
Intangibles assets, Gross $ 241,561 77,800  
Finite-Lived Intangible Assets, Accumulated Amortization (39,252) (13,550)  
Finite-Lived Intangible Assets, Net $ 202,309 64,250  
Trademarks and Trade Names [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 6 years 1 month 6 days    
Intangibles assets, Gross $ 13,800 1,700  
Finite-Lived Intangible Assets, Accumulated Amortization (1,992) (405)  
Finite-Lived Intangible Assets, Net $ 11,808 1,295  
Customer Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 4 years 7 months 6 days    
Intangibles assets, Gross $ 121,100 20,000  
Finite-Lived Intangible Assets, Accumulated Amortization (26,661) (4,782)  
Finite-Lived Intangible Assets, Net $ 94,439 15,218  
Noncompete Agreements [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 3 years    
Intangibles assets, Gross $ 1,100 900  
Finite-Lived Intangible Assets, Accumulated Amortization (506) (156)  
Finite-Lived Intangible Assets, Net 594 744  
Exar and G.hn business [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived Intangible Assets Acquired 245,500    
Entropic Communications [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived Intangible Assets Acquired   46,300  
Cost of Sales [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets (25,316) (8,512) (4,263)
Research and Development Expense [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets (551) (619) (679)
Selling, general and administrative [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets $ (28,827) $ (6,953) $ (24,989)