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RELATED PARTY TRANSACTIONS (Tables)
 12 Months Ended
Dec. 31, 2015
Related Party Transactions [Abstract]  
Schedule of Recognized Revenue and Cost of Net Sales for Sales of Telecommunications Equipment and Services to Affiliates of Softbank
    Year Ended
December 31,		  
    2013  
    (in thousands)  
Net sales   $ 90,302  
Cost of net sales     59,052  
Gross profit   $ 31,250