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DEFERRED COSTS AND REVENUES (Tables)
3 Months Ended
Mar. 31, 2016
DEFERRED COSTS AND REVENUES [Abstract]  
Schedule of Deferred Revenue
    March 31,     December 31,  
    2016     2015  
             
magicJack devices   $ 8,326     $ 9,352  
Access right renewals     40,781       40,677  
Prepaid minutes     2,536       2,525  
Other     172       -  
Deferred revenue, current     51,815       52,554  
                 
Deferred revenue, non-current*     49,134       50,146  
Total deferred revenues   $ 100,949     $ 102,700