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SHARE-BASED COMPENSATION (Details 1) | 12 Months Ended
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Dec. 31, 2019 shares $ / shares | Dec. 31, 2018 shares $ / shares
Sharebased Compensation Details 1Abstract |  |
Stock options outstanding, beginning | shares | 13,865,193 | 11,799,650
Stock options granted | shares | 3,005,000 | 3,427,543
Stock option exercises | shares | (663,150) | 0
Stock options expired | shares | (866,000) | (816,000)
Stock options forfeited | shares | (1,513,800) | (546,000)
Stock options outstanding, ending | shares | 13,827,243 | 13,865,193
Stock options exercisable, ending | shares | 9,747,721 | 7,439,950
Stock options outstanding, weighted average exercise price, beginning | $ / shares | $ 0.83 | $ 0.94
Weighted average exercise price, stock options granted | $ / shares | 0.67 | 0.61
Weighted average exercise price, stock options exercised | $ / shares | 0.61 | 0.00
Weighted average exercise price, stock options expired | $ / shares | 1.81 | 1.30
Weighted average exercise price, stock options forfeited | $ / shares | 0.79 | 0.90
Stock options outstanding, weighted average exercise price, ending | $ / shares | 0.75 | 0.83
Stock options exercisable, weighted average exercise price, ending | $ / shares | $ 0.80 | $ 0.93

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