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CREDIT RISK AND CONCENTRATION (Tables)
12 Months Ended
Dec. 31, 2014
CREDIT RISK AND CONCENTRATION [Abstract]  
Schedule of Customers Who Accounted for 10% or more of the Company's Net Revenues
For the years ended
December 31,
 
     2014               2013               2012       
Affiliates of Softbank               44 %     55 %     49 %