Annual report pursuant to Section 13 and 15(d)

Business Combination - Additional Information (Details)

v3.3.1.900
Business Combination - Additional Information (Details)
$ in Thousands, shares in Millions
 9 Months Ended 12 Months Ended
Apr. 30, 2015
USD ($)
subsidiary
shares
Oct. 31, 2014
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Business Acquisition [Line Items]              
Number of wholly-owned subsidiaries (in subsidiary) | subsidiary 2            
Stock based compensation expense         $ 19,268 $ 15,008 $ 12,686
Remaining fair value step-up included in inventory         32,443 10,858  
Goodwill         49,779 1,201  
2015 RSU Plan [Member]              
Business Acquisition [Line Items]              
Period for recognizing stock-based compensation   14 months          
2016 RSU Plan [Member]              
Business Acquisition [Line Items]              
Period for recognizing stock-based compensation   26 months          
Continued Employment [Member]              
Business Acquisition [Line Items]              
Quarterly installments   $ 200          
Separately recognized transactions, expenses and losses recognized   100     70    
Working Capital Adjustment           40  
Continued Employment [Member] | Scenario, Forecast [Member]              
Business Acquisition [Line Items]              
Separately recognized transactions, expenses and losses recognized       $ 50      
RSUs [Member]              
Business Acquisition [Line Items]              
Maximum value of restricted stock issued for meeting performance targets         $ 1,625 3,250  
Maximum revenue to average company share price         50.00%    
Number of consecutive trading days used to calculated average closing sales price         5 days    
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Compensation         $ 1,900 300  
RSUs [Member] | Former Entropic Stock Plans [Member]              
Business Acquisition [Line Items]              
Stock based compensation expense     $ 3,400        
RSUs [Member] | Scenario, Forecast [Member]              
Business Acquisition [Line Items]              
Maximum value of restricted stock issued for meeting performance targets       $ 1,625      
Maximum revenue to average company share price       50.00%      
Number of consecutive trading days used to calculated average closing sales price       5 days      
Entropic Communications [Member]              
Business Acquisition [Line Items]              
Number of wholly-owned subsidiaries (in subsidiary) | subsidiary 2            
Cash $ 111,125            
Consideration issued in shares | shares 20.4            
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            
Portion of equity awards that have not been vested or earned $ 9,300            
Stock based compensation expense         4,000    
Number of stock options that have not been vested or earned (shares) | shares 1.9            
Capitalized acquisition costs $ 700            
Fair market value step-up in inventory 14,200            
Cost of goods sold recognized related to fair value step-up         14,200    
Acquisition related costs         5,500    
Intangible assets acquired 92,400            
Revenue of acquiree since acquisition         143,500    
Earnings of acquiree since acquisition         60,500    
Goodwill 48,578            
Identifiable intangible assets 92,400            
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Compensation $ 3,517            
Entropic Communications [Member] | Developed Technology Rights [Member]              
Business Acquisition [Line Items]              
Average useful life 7 years            
Entropic Communications [Member] | RSUs [Member]              
Business Acquisition [Line Items]              
Number of restricted stock units that have not been vested or earned (shares) | shares 1.3            
Entropic Communications [Member] | Common Stock [Member]              
Business Acquisition [Line Items]              
Consideration issued in shares | shares 20.4            
Entropic Communications [Member] | Common Stock [Member] | Former Entropic Stock Plans [Member]              
Business Acquisition [Line Items]              
Consideration issued in shares | shares 3.2            
Physpeed [Member]              
Business Acquisition [Line Items]              
Cash   9,250          
Total consideration given   9,515          
Equity value of shares that were outstanding and vested prior to acquisition   $ 265          
Acquisition related costs           300  
Percentage of voting interests acquired   100.00%          
Escrow deposit   $ 1,100          
Contingent consideration payments     $ 1,000        
Goodwill   1,201          
Identifiable intangible assets   $ 10,000          
Average useful life   7 years          
Physpeed [Member] | Continued Employment [Member]              
Business Acquisition [Line Items]              
Contingent consideration liability   $ 1,700          
Physpeed [Member] | Earn-out Consideration [Member]              
Business Acquisition [Line Items]              
Contingent consideration liability   300     395 $ 300  
Contingent consideration, high range of outcomes   750          
Base amount multiplied by revenue percent         $ 375    
Physpeed [Member] | Earn-out Consideration [Member] | Scenario, Forecast [Member]              
Business Acquisition [Line Items]              
Base amount multiplied by revenue percent       $ 375      
Physpeed [Member] | Developed Technology Rights [Member]              
Business Acquisition [Line Items]              
Identifiable intangible assets   2,700          
Physpeed [Member] | In Process Research and Development [Member]              
Business Acquisition [Line Items]              
Identifiable intangible assets   $ 7,300