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Share-Based Compensation - Summary of Stock Option Activity (Details) - $ / shares
9 Months Ended 12 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Number of Options    
Number of options, beginning balance (in shares) 54,282,752  
Number of options, granted (in shares) 7,460,000  
Number of options, exercised (in shares) (51,975)  
Number of options, forfeited/ expired (in shares) (4,639,765)  
Number of options, ending balance (in shares) 57,051,012 54,282,752
Weighted Average Price CAD$    
Weighted Average Price, Beginning Balance (in dollar per shares) $ 0.94  
Weighted Average Price, Granted (in dollar per shares) 0.82  
Weighted Average Price, Exercised (in dollar per shares) 0.80  
Weighted Average Price, Forfeited/ Expired (in dollar per shares) 1.01  
Weighted Average Price, Ending Balance (in dollar per shares) $ 0.89 $ 0.94
Weighted Average Years    
Weighted average years 2 years 4 months 9 days 2 years 11 months 19 days
Weighted average years, granted 3 years 4 months 17 days