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STOCK-BASED COMPENSATION (Details 2)
3 Months Ended
Mar. 31, 2017
$ / shares
shares
Outstanding Options  
Number Outstanding at March 31, 2017 | shares 6,447,000
Weighted Averaged Remaining Life 5 years 3 months 4 days
Weighted Averaged Exercise Price | $ / shares $ 1.53
Vested Options  
Number Exercisable at March 31, 2017 | shares 4,460,000
Weighted Averaged Exercise Price | $ / shares $ 4.59
Weighted Averaged Remaining Life 4 years 7 months 2 days
$0.20 - $0.53 [Member]  
Outstanding Options  
Number Outstanding at March 31, 2017 | shares 2,152,000
Weighted Averaged Remaining Life 4 years 11 months 5 days
Weighted Averaged Exercise Price | $ / shares $ 0.26
Vested Options  
Number Exercisable at March 31, 2017 | shares 2,152,000
Weighted Averaged Exercise Price | $ / shares $ 4.93
Weighted Averaged Remaining Life 4 years 11 months 5 days
$0.65 - $1.80 [Member]  
Outstanding Options  
Number Outstanding at March 31, 2017 | shares 1,369,000
Weighted Averaged Remaining Life 3 years 11 months 16 days
Weighted Averaged Exercise Price | $ / shares $ 0.88
Vested Options  
Number Exercisable at March 31, 2017 | shares 1,226,000
Weighted Averaged Exercise Price | $ / shares $ 3.75
Weighted Averaged Remaining Life 3 years 9 months
$1.83 - $2.84 [Member]  
Outstanding Options  
Number Outstanding at March 31, 2017 | shares 1,848,000
Weighted Averaged Remaining Life 5 years 5 months 1 day
Weighted Averaged Exercise Price | $ / shares $ 2.08
Vested Options  
Number Exercisable at March 31, 2017 | shares 1,022,000
Weighted Averaged Exercise Price | $ / shares $ 4.93
Weighted Averaged Remaining Life 4 years 11 months 5 days
$3.20 - $6.20 [Member]  
Outstanding Options  
Number Outstanding at March 31, 2017 | shares 1,070,000
Weighted Averaged Remaining Life 7 years 3 months 26 days
Weighted Averaged Exercise Price | $ / shares $ 3.9
Vested Options  
Number Exercisable at March 31, 2017 | shares 52,000
Weighted Averaged Exercise Price | $ / shares $ 3.92
Weighted Averaged Remaining Life 3 years 11 months 1 day
$7.20 - $22.00 [Member]  
Outstanding Options  
Number Outstanding at March 31, 2017 | shares 8,000
Weighted Averaged Remaining Life 2 years 4 months 17 days
Weighted Averaged Exercise Price | $ / shares $ 10.36
Vested Options  
Number Exercisable at March 31, 2017 | shares 8,000
Weighted Averaged Exercise Price | $ / shares $ 2.38
Weighted Averaged Remaining Life 2 years 4 months 17 days