v3.22.2.2
SHARE CAPITAL - Disclosure of number and weighted average exercise prices of share options (Details)
12 Months Ended
Aug. 31, 2022
$ / shares
Aug. 31, 2022
Share
Aug. 31, 2022
shares
Aug. 31, 2021
Share
$ / shares
Disclosure Of Share Capital Information [Abstract]        
Number of share options outstanding in share-based payment arrangement at beginning of period (in shares) | Share   7,797,273    
Number of share options granted (in shares) | Share   5,477,000    
Number of share options exercised in share-based payment arrangement (in shares) | Share   (100,799)   (1,691,498)
Number of share options forfeited in share-based payment arrangement (in shares) | Share   (754,981)    
Number of share options expired in share-based payment arrangement (in shares) | Share   (1,367,554)    
Number of share options outstanding in share-based payment arrangement at ene of period (in shares)   11,050,939 11,050,939 7,797,273
Weighted average exercise price at beginning of period (in CAD per share) $ 3.84      
Weighted average exercise price of share options granted in share-based payment arrangement (in CAD per share) 1.55      
Weighted average exercise price of share options exercised in share-based payment arrangement (in CAD per share) 0.70     $ 2.38
Weighted average exercise price of share options forfeited in share-based payment arrangement (in CAD per share) 5.18      
Weighted average exercise price of share options expired in share-based payment arrangement (in CAD per share) 2.77      
Weighted average exercise price at end of period (in CAD per share) $ 2.77     $ 3.84