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STOCK-BASED COMPENSATION (Details 2)
12 Months Ended
Dec. 31, 2020
$ / shares
shares
Outstanding Options  
Number Outstanding at end | shares 5,198,000
Weighted Averaged Remaining Life 6 years 11 months 1 day
Weighted Averaged Exercise Price | $ / shares $ 4.23
Vested Options  
Number Exercisable at end | shares 2,395,000
Weighted Averaged Exercise Price | $ / shares $ 3.64
Weighted Averaged Remaining Life 5 years 8 months 9 days
$0.20 - $0.53 [Member]  
Outstanding Options  
Number Outstanding at end | shares 130,000
Weighted Averaged Remaining Life 2 years 4 months 2 days
Weighted Averaged Exercise Price | $ / shares $ 0.27
Vested Options  
Number Exercisable at end | shares 130,000
Weighted Averaged Exercise Price | $ / shares $ 0.27
Weighted Averaged Remaining Life 2 years 4 months 2 days
$0.65 - $1.80 [Member]  
Outstanding Options  
Number Outstanding at end | shares 115,000
Weighted Averaged Remaining Life 4 years 1 month 24 days
Weighted Averaged Exercise Price | $ / shares $ 1.05
Vested Options  
Number Exercisable at end | shares 115,000
Weighted Averaged Exercise Price | $ / shares $ 1.05
Weighted Averaged Remaining Life 4 years 1 month 24 days
$1.83 - $2.84 [Member]  
Outstanding Options  
Number Outstanding at end | shares 208,000
Weighted Averaged Remaining Life 3 years 1 month 2 days
Weighted Averaged Exercise Price | $ / shares $ 1.97
Vested Options  
Number Exercisable at end | shares 208,000
Weighted Averaged Exercise Price | $ / shares $ 1.97
Weighted Averaged Remaining Life 3 years 1 month 2 days
$3.20 - $6.20 [Member]  
Outstanding Options  
Number Outstanding at end | shares 4,627,000
Weighted Averaged Remaining Life 7 years 2 months 19 days
Weighted Averaged Exercise Price | $ / shares $ 4.17
Vested Options  
Number Exercisable at end | shares 1,942,000
Weighted Averaged Exercise Price | $ / shares $ 4.19
Weighted Averaged Remaining Life 6 years 3 months 11 days
$7.20-$22.00 [Member]  
Outstanding Options  
Number Outstanding at end | shares 118,000
Weighted Averaged Remaining Life 9 years 8 months 12 days
Weighted Averaged Exercise Price | $ / shares $ 17.92
Vested Options  
Number Exercisable at end | shares 0
Weighted Averaged Exercise Price | $ / shares $ 0