Annual report pursuant to Section 13 and 15(d)

Business Combination - Additional Information (Details)

v3.6.0.2
Business Combination - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jul. 01, 2016
Apr. 28, 2016
Apr. 30, 2015
Oct. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Business Acquisition [Line Items]              
Business Acquisition, Date of Acquisition Agreement   Apr. 28, 2016     Jul. 01, 2016    
Cash   $ 21,000     $ 80,000    
Business Acquisition, Name of Acquired Entity   wireless infrastructure access business     wireless infrastructure backhaul business    
Stock based compensation expense         $ 21,765 $ 19,268 $ 15,008
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Fair Value Mark Up On Inventory         5,300    
Business Combination Pro Forma Information Amortization of Inventory Step Up included in Consolidated Income Statement         5,641 5,641  
Remaining fair value step-up included in inventory         26,583 32,443  
Contingent consideration liability             1,700
Contingent consideration payments         (220) (130) 0
Goodwill         76,015 49,779 $ 1,201
Continued Employment [Member]              
Business Acquisition [Line Items]              
Separately recognized transactions, expenses and losses recognized       $ 100 50 70  
Wireless Infrastructure Backhaul Business of Broadcom Corporation [Member]              
Business Acquisition [Line Items]              
Cash $ 80,000 $ 21,000          
Business Combination Pro Forma Information Amortization of Inventory Step Up included in Consolidated Income Statement         5,305    
Goodwill $ 19,301 $ 21,000     $ 19,301    
Average useful life         4 years 10 months 25 days    
Wireless Infrastructure Backhaul Business of Broadcom Corporation [Member] | Developed Technology Rights [Member]              
Business Acquisition [Line Items]              
Average useful life         7 years    
Entropic Communications [Member]              
Business Acquisition [Line Items]              
Business Acquisition, Date of Acquisition Agreement     Apr. 30, 2015        
Cash     $ 111,125        
Total consideration given     289,391        
Portion of outstanding equity awards deemed to have been outstanding and vested     173,781        
Equity value of shares that were outstanding and vested prior to acquisition     $ 4,485        
Goodwill           $ 48,578  
Physpeed [Member]              
Business Acquisition [Line Items]              
Business Acquisition, Date of Acquisition Agreement       Oct. 31, 2014      
Cash       $ 9,250      
Percentage of voting interests acquired       100.00%      
Escrow deposit       $ 1,100      
Physpeed [Member] | Earn-out Consideration [Member]              
Business Acquisition [Line Items]              
Contingent consideration liability       300      
Contingent consideration, high range of outcomes       $ 750      
Base amount multiplied by revenue percent         $ 375    
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member] | Contingent Consideration [Member]              
Business Acquisition [Line Items]              
Payment of Contingent Consideration         $ (240)