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Share Capital and Warrants - Summary of Common Share Purchase Warrants (Parenthetical) (Details)
 12 Months Ended
Aug. 01, 2019
$ / shares
Dec. 31, 2020
Dec. 31, 2019
$ / shares
shares
Dec. 31, 2019
$ / shares
Warrants | CAD Denominated Convertible Notes        
Disclosure Of Common Share Purchase Warrants [Line Items]        
Warrant exercise price     $ 4.38  
Warrants issued on conversion of convertible notes | shares     3,095,386  
Warrants | USD Denominated Convertible Notes        
Disclosure Of Common Share Purchase Warrants [Line Items]        
Warrant exercise price       $ 3.75
Warrants issued on conversion of convertible notes | shares     476,888  
Director        
Disclosure Of Common Share Purchase Warrants [Line Items]        
Share purchase warrants | shares     480,000  
Warrant exercise price     $ 15.94  
40% Warrants        
Disclosure Of Common Share Purchase Warrants [Line Items]        
Percentage of warrants 40.00% 40.00%    
Exercise price of warrants $ 21.63      
60% Warrants        
Disclosure Of Common Share Purchase Warrants [Line Items]        
Percentage of warrants 60.00% 60.00%    
Exercise price of warrants $ 20.76