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GENERAL (Business Combinations and Impairment of Goodwill) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Business Acquisition [Line Items]        
Goodwill impairment   $ 20,402
Impairment loss of property and equipment, net   4,106    
Impairment of long lived assets   10,137
Gilat International [Member]        
Business Acquisition [Line Items]        
Impairment loss of property and equipment, net   4,106    
Impairment loss of long-term deferred charges   6,031    
Impairment of long lived assets   10,137    
Wavestream Corporation [Member]        
Business Acquisition [Line Items]        
Goodwill impairment $ 20,402 $ 0    
Period of projected cash flows   5 years    
Long-term growth rate   4.00%    
Discount rate   13.00%