Quarterly report pursuant to Section 13 or 15(d)

Business Combinations (Details Textuals)

v3.8.0.1
Business Combinations (Details Textuals) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jul. 01, 2016
Apr. 28, 2016
Apr. 30, 2015
Oct. 31, 2014
Sep. 30, 2017
Mar. 31, 2017
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Wireless Infrastructure Access Line Business of of Microsemi Storage Solutions, Inc. [Member]                  
Business Acquisition [Line Items]                  
Business Acquisition, Effective Date of Acquisition   Apr. 28, 2016              
Business Combination, Consideration Transferred   $ 21,000              
Business Acquisition, Name of Acquired Entity wireless infrastructure access business                
Wireless Infrastructure Backhaul Business of Broadcom Corporation [Member]                  
Business Acquisition [Line Items]                  
Goodwill, Acquired During Period           $ (341)      
Business Acquisition, Effective Date of Acquisition Jul. 01, 2016                
Business Combination, Consideration Transferred $ 80,000                
Business Acquisition, Name of Acquired Entity wireless infrastructure backhaul business                
Entropic Communications [Member]                  
Business Acquisition [Line Items]                  
Business Acquisition, Effective Date of Acquisition     Apr. 30, 2015            
Business Combination, Consideration Transferred     $ 289,400            
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable     173,800            
Business Combination, Consideration Transferred, Liabilities Incurred     4,500            
Payments to Acquire Businesses, Gross     $ 111,100            
Physpeed [Member]                  
Business Acquisition [Line Items]                  
Business Acquisition, Effective Date of Acquisition       Oct. 31, 2014          
Payments to Acquire Businesses, Gross       $ 9,250          
Physpeed Acquisition Related [Abstract]                  
Business Acquisition, Percentage of Voting Interests Acquired       100.00%          
Cash [Member]                  
Physpeed Acquisition Related [Abstract]                  
Payment of Contingent Consideration         $ 760        
Earn-out Consideration [Member] | Physpeed [Member]                  
Physpeed Acquisition Related [Abstract]                  
Business Combination, Contingent Consideration, Liability       $ 300 0   $ 0 $ 364  
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High       $ 750          
Business Combination, Contingent Consideration Arrangements, Base Amount Multiplied by Revenue Percent                 $ 375
Payment of Contingent Consideration             375 $ (240)  
Restricted Stock Units (RSUs) [Member]                  
Physpeed Acquisition Related [Abstract]                  
Payment of Contingent Consideration         860        
Restricted Stock Units (RSUs) [Member] | Physpeed [Member]                  
Physpeed Acquisition Related [Abstract]                  
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Compensation         $ 1,600   $ 1,600