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STOCK-BASED COMPENSATION (Details 2)
3 Months Ended
Mar. 31, 2016
$ / shares
shares
Stock Options Outstanding Exercise Prices Range Low $ 0.26
Stock Options Outstanding Excecise Prices Range High 135.75
Stock Options Outstanding Excecise Prices Weighted Average $ 1.1
Stock Options Outstanding, Remaining Contractual Term 8 years 10 months 24 days
Stock Options Outstanding, Number of Shares | shares 26,347,399
Vested Options Weighted Average Price $ 1.26
Vested Options, Number of Shares | shares 21,241,536
Range One [Member]  
Stock Options Outstanding Exercise Prices Range Low $ 0.26
Stock Options Outstanding Excecise Prices Range High 0.4
Stock Options Outstanding Excecise Prices Weighted Average $ 0.38
Stock Options Outstanding, Remaining Contractual Term 9 years
Stock Options Outstanding, Number of Shares | shares 11,472,198
Vested Options Weighted Average Price $ 0.38
Vested Options, Number of Shares | shares 7,285,531
Range Two [Member]  
Stock Options Outstanding Exercise Prices Range Low $ 0.71
Stock Options Outstanding Excecise Prices Range High 0.79
Stock Options Outstanding Excecise Prices Weighted Average $ 0.75
Stock Options Outstanding, Remaining Contractual Term 9 years
Stock Options Outstanding, Number of Shares | shares 14,375,200
Vested Options Weighted Average Price $ 0.74
Vested Options, Number of Shares | shares 13,456,004
Range Three [Member]  
Stock Options Outstanding Exercise Prices Range Low $ 3.75
Stock Options Outstanding Excecise Prices Range High 3.75
Stock Options Outstanding Excecise Prices Weighted Average $ 3.75
Stock Options Outstanding, Remaining Contractual Term 2 years 3 months 18 days
Stock Options Outstanding, Number of Shares | shares 346,667
Vested Options Weighted Average Price $ 3.75
Vested Options, Number of Shares | shares 346,667
Range Four [Member]  
Stock Options Outstanding Exercise Prices Range Low $ 77.25
Stock Options Outstanding Excecise Prices Range High 135.75
Stock Options Outstanding Excecise Prices Weighted Average $ 82.34
Stock Options Outstanding, Remaining Contractual Term 3 years 2 months 12 days
Stock Options Outstanding, Number of Shares | shares 153,334
Vested Options Weighted Average Price $ 82.34
Vested Options, Number of Shares | shares 153,334