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STOCK BASED COMPENSATION (Details 1)
9 Months Ended
Sep. 30, 2016
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Outstanding at beginning | shares 240,930
Granted | shares 185,245
Forfeited | shares (35,751)
Outstanding at ending | shares 390,424
Exercisable at ending | shares 242,356
Vested and expected to vest | shares 414,177 [1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Rollforward]  
Outstanding at beginning | $ / shares $ 38.89
Granted | $ / shares 3.95
Forfeited | $ / shares 28.90
Outstanding at ending | $ / shares 25.81
Exercisable at ending | $ / shares 41.1
Vested and expected to vest | $ / shares $ 28.95 [1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Contractual Life Remaining in Years [Rollforward]  
Outstanding at ending 7 years 4 months 10 days
Exercisable at end 5 years 6 months 14 days
Vested and expected to vest 7 years 7 days [1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Rollforward]  
Outstanding at beginning | $
Granted | $
Forfeited | $
Expired | $
Outstanding at ending | $ 6,451,077
Exercisable at ending | $
[1] vested shares and unvested shares after a forfeiture rate is applied