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SHARE CAPITAL AND RESERVES - The continuity of share purchase options (Details)
 12 Months Ended
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