Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets Goodwill and Intangibles Other (Details 2)

v3.6.0.2
Goodwill and Intangible Assets Goodwill and Intangibles Other (Details 2) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Apr. 30, 2015
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months   $ 18,803      
Other Indefinite-lived Intangible Assets     $ 3,200 $ 7,300  
Impairment of Intangible Assets (Excluding Goodwill) $ (17,800) (1,300) (21,600) 0  
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)   1,300 21,600 0  
Finite-Lived Intangible Assets, Amortization Expense, Year Two   18,786      
Finite-Lived Intangible Assets, Amortization Expense, Year Three   12,485      
2019   11,670      
2020   11,293      
Finite-Lived Intangible Assets, Amortization Expense, after Year Five   8,824      
Finite-Lived Intangible Assets, Net   81,861 48,155 $ 3,086  
Entropic Communications [Member]          
Indefinite-lived Intangible Assets [Line Items]          
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments     18,200    
Wireless Infrastructure Access Line Business of of Microsemi Storage Solutions, Inc. [Member]          
Indefinite-lived Intangible Assets [Line Items]          
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments   1,300      
Wireless Infrastructure Backhaul Business of Broadcom Corporation [Member]          
Indefinite-lived Intangible Assets [Line Items]          
Transfers into developed technology from IPR&D   22,300      
CDR [Member]          
Indefinite-lived Intangible Assets [Line Items]          
Impairment of Intangible Assets (Excluding Goodwill)   (3,800)      
Indefinite-lived Intangible Assets [Member]          
Indefinite-lived Intangible Assets [Line Items]          
Other Indefinite-lived Intangible Assets   22,400 3,200    
Intangible Assets, Transfer from IPRD to Developed Tech   (3,100) (700)    
Impairment of Intangible Assets (Excluding Goodwill)   $ (1,300) $ (21,600)    
Indefinite-lived Intangible Assets [Member] | Entropic Communications [Member]          
Indefinite-lived Intangible Assets [Line Items]          
Identifiable intangible assets         $ 18,100