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STOCK-BASED COMPENSATION (Details 1)
 6 Months Ended
Jun. 30, 2017
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Balance at beginning | shares 5,636,000
Granted | shares 1,097,000
Exercised | shares (1,491,000)
Forfeiture and cancelled | shares (22,000)
Balance at end | shares 5,220,000
Exercisable at end | shares 3,466,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]  
Balance at beginning | $ / shares $ 1.04
Granted | $ / shares 3.9
Exercised | $ / shares 0.69
Forfeiture and cancelled | $ / shares 0.96
Balance at end | $ / shares 1.72
Exercisable at end | $ / shares $ 1.17
Share-based Compensation Arrangement by Share-based Payment Award, Options, Intrinsic Value [Roll Forward]  
Balance at beginning | $ $ 7,317,000
Balance at end | $ $ 9,444,762
Share-based Compensation Arrangement by Share-based Payment Award, Options, Average Remaining Term [Roll Forward]  
Balance at beginning 5 years 22 days
Balance at end 5 years 3 months 4 days