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SHARE-BASED COMPENSATION (Details 1) | 12 Months Ended
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Dec. 31, 2020 shares $ / shares | Dec. 31, 2019 shares $ / shares
Share Based Compensation Abstract |  |
Stock options outstanding, beginning | shares | 13,827,243 | 13,865,193
Stock options granted | shares | 3,671,000 | 3,005,000
Stock option exercises | shares | (251,500) | (663,150)
Stock options expired | shares | (1,424,000) | (866,000)
Stock options forfeited | shares | (745,500) | (1,513,800)
Stock options outstanding, ending | shares | 15,077,243 | 13,827,243
Stock options exercisable, ending | shares | 10,289,743 | 9,747,721
Stock options outstanding, weighted average exercise price, beginning | $ / shares | $ 0.75 | $ 0.83
Weighted average exercise price, stock options granted | $ / shares | .46 | 0.67
Weighted average exercise price, stock options exercised | $ / shares | .59 | 0.61
Weighted average exercise price, stock options expired | $ / shares | .97 | 1.81
Weighted average exercise price, stock options forfeited | $ / shares | .67 | 0.79
Stock options outstanding, weighted average exercise price, ending | $ / shares | .67 | 0.75
Stock options exercisable, weighted average exercise price, ending | $ / shares | $ .74 | $ 0.80

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