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SHARE-BASED COMPENSATION (Details 2) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 shares $ / shares | Dec. 31, 2018 shares $ / shares | Dec. 31, 2017 shares $ / shares
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Weighted average remaining contractual life | 2 years 6 months 4 days |  |
Stock options outstanding | shares | 13,827,243 | 13,865,193 | 11,799,650
Weighted average exercise price per share | $ / shares | $ 0.75 | $ 0.83 | $ 0.94
$0.50 to $0.74 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Weighted average remaining contractual life | 3 years 29 days |  |
Stock options outstanding | shares | 7,390,643 |  |
Weighted average exercise price per share | $ / shares | $ .63 |  |
$0.75 to $0.99 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Weighted average remaining contractual life | 2 years 2 months 8 days |  |
Stock options outstanding | shares | 5,332,600 |  |
Weighted average exercise price per share | $ / shares | $ 0.85 |  |
$1.00 to $1.39 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Weighted average remaining contractual life | 2 months 8 days |  |
Stock options outstanding | shares | 1,104,000 |  |
Weighted average exercise price per share | $ / shares | $ 1.09 |  |

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