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Nature of Operations - Additional Information (Detail) - MW
9 Months Ended
Sep. 30, 2020
Mar. 31, 2020
Nature Of Operations [Line Items]    
Equity ownership percentage   57.40%
Village Fields Hemp USA LLC VF Hemp [Member]    
Nature Of Operations [Line Items]    
Equity ownership percentage 65.00%  
Pure Sunfarms Corp Pure Sunfarms [Member]    
Nature Of Operations [Line Items]    
Equity ownership percentage 58.70%  
VF Clean Energy Inc [Member] | Power Plant [Member]    
Nature Of Operations [Line Items]    
Generation of Electricity 7.0