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Warrants - Additional Information (Details) - $ / shares
 12 Months Ended
May 31, 2021
May 31, 2020
Class Of Warrant Or Right [Line Items]    
Warrants issued 6,209,000 5,828,652
Daily cash penalty 1.00%  
Level 3 [Member]    
Class Of Warrant Or Right [Line Items]    
Estimated fair value of warrant liability per warrant $ 12.59  
2016 Aphria Warrants    
Class Of Warrant Or Right [Line Items]    
Warrants issued 200,000  
Warrant expiry date Sep. 26, 2021  
Warrants replacement 166,000  
2016 Aphria Warrants    
Class Of Warrant Or Right [Line Items]    
Warrants issued 7,022,472  
Warrant expiry date Jan. 30, 2022  
Warrants received 5,828,651