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SHARE CAPITAL AND RESERVES - The continuity of share purchase options (Details) | 12 Months Ended
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Dec. 31, 2021 Options $ / shares | Dec. 31, 2020 Options $ / shares | Dec. 31, 2019 Options $ / shares
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Option outstanding at the beginning | 14,182,500 | 7,885,000 |
Option granted | 1,756,500 | 15,492,500 |
Option exercised | (1,273,000) | (9,195,000) |
Option cancelled/ forfeited/ expired | (71,000) |  |
Option outstanding at the end | 14,595,000 | 14,182,500 | 7,885,000
Option exercisable at the end | 14,256,750 | 14,182,500 |
Weighted average exercise price, option outstanding at the beginning | $ / shares | $ 2.36 | $ 0.41 |
Weighted average exercise price, option granted | $ / shares | 5.39 | 2.40 |
Weighted average exercise price, option exercised | $ / shares | 0.97 | 0.77 |
Weighted average exercise price, option cancelled/ forfeited/ expired | $ / shares | 6.91 |  |
Weighted average exercise price, option outstanding at the end | $ / shares | 3.01 | 2.36 | $ 0.41
Weighted average exercise price, option exercisable at the end | $ / shares | $ 2.92 | $ 2.36 |
Weighted average contractual remaining life (years) | 3 years 8 months 15 days | 4 years 6 months 29 days | 4 years 2 months 19 days
Weighted average contractual remaining life, option granted |  | 5 years |
Weighted average contractual remaining life, option exercisable at the end | 3 years 8 months 15 days | 4 years 6 months 29 days |
Weighted average fair value of share purchase options exercised | $ / shares | $ 0.68 | $ 0.56 |
Weighted average share price of options exercised | $ / shares | 8.84 | 3.12 |
Weighted average fair value of share purchase options granted | $ / shares | 5.15 | 1.71 |
Exercise price of $0.15 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 0.15 | $ 0.15 |
Option outstanding at the beginning | 75,000 | 1,930,000 |
Option exercised | (75,000) | (1,855,000) |
Option outstanding at the end |  | 75,000 | 1,930,000
Option exercisable at the end |  | 75,000 |
Exercise price of $0.4 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 0.40 | $ 0.40 |
Option outstanding at the beginning | 250,000 | 350,000 |
Option exercised | (100,000) | (100,000) |
Option outstanding at the end | 150,000 | 250,000 | 350,000
Option exercisable at the end | 150,000 | 250,000 |
Exercise price of $0.5 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 0.50 | $ 0.50 |
Option outstanding at the beginning | 2,685,000 | 5,605,000 |
Option exercised | (760,000) | (2,920,000) |
Option outstanding at the end | 1,925,000 | 2,685,000 | 5,605,000
Option exercisable at the end | 1,925,000 | 2,685,000 |
Exercise price of $1 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 1.00 | $ 1.00 |
Option outstanding at the beginning | 1,500,000 |  |
Option granted |  | 2,300,000 |
Option exercised | (50,000) | (800,000) |
Option outstanding at the end | 1,450,000 | 1,500,000 |
Option exercisable at the end | 1,450,000 | 1,500,000 |
Exercise price of $1.075 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 1.075 | $ 1.075 |
Option outstanding at the beginning | 225,000 |  |
Option granted |  | 1,670,000 |
Option exercised | (25,000) | (1,445,000) |
Option outstanding at the end | 200,000 | 225,000 |
Option exercisable at the end | 200,000 | 225,000 |
Exercise price of $1.4 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 1.40 | $ 1.40 |
Option outstanding at the beginning | 2,965,000 |  |
Option granted |  | 5,040,000 |
Option exercised | (65,000) | (2,075,000) |
Option outstanding at the end | 2,900,000 | 2,965,000 |
Option exercisable at the end | 2,900,000 | 2,965,000 |
Exercise price of $2.07 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 2.07 | $ 2.07 |
Option outstanding at the beginning | 215,000 |  |
Option granted |  | 215,000 |
Option exercised | (100,000) |  |
Option outstanding at the end | 115,000 | 215,000 |
Option exercisable at the end | 115,000 | 215,000 |
Exercise price of $2.15 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 2.15 | $ 2.15 |
Option outstanding at the beginning | 25,000 |  |
Option granted |  | 25,000 |
Option outstanding at the end | 25,000 | 25,000 |
Option exercisable at the end | 25,000 | 25,000 |
Exercise price of $4.1 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 4.10 | $ 4.10 |
Option outstanding at the beginning | 6,242,500 |  |
Option granted |  | 6,242,500 |
Option exercised | (87,500) |  |
Option outstanding at the end | 6,155,000 | 6,242,500 |
Option exercisable at the end | 6,155,000 | 6,242,500 |
Exercise price of $6.79 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 6.79 |  |
Option outstanding at the beginning |  |  |
Option granted | 1,369,000 |  |
Option exercised | (10,500) |  |
Option cancelled/ forfeited/ expired | (64,250) |  |
Option outstanding at the end | 1,294,250 |  |
Option exercisable at the end | 1,118,000 |  |
Exercise price of $8.62 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 8.62 |  |
Option outstanding at the beginning |  |  |
Option granted | 200,000 |  |
Option outstanding at the end | 200,000 |  |
Option exercisable at the end | 200,000 |  |
Exercise price of $8.7 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 8.70 |  |
Option outstanding at the beginning |  |  |
Option granted | 125,000 |  |
Option outstanding at the end | 125,000 |  |
Option exercisable at the end | 12,500 |  |
Exercise price of $8.04 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price | $ / shares | $ 8.04 |  |
Option outstanding at the beginning |  |  |
Option granted | 62,500 |  |
Option cancelled/ forfeited/ expired | (6,750) |  |
Option outstanding at the end | 55,750 |  |
Option exercisable at the end | 6,250 |  |

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