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Shareholders' Equity and Share Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 10, 2020
Sep. 30, 2020
Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Shares issued in pubic offering, net of issuance costs (in shares) 9,396,226    
Purchase price $ 5.30    
Proceeds from issuance of common stock $ 49,800 $ 46,388 $ 13,868
Description of units sold Each unit that was sold consists of one common share of the Company and a one-half (0.5) of a warrant to purchase a common share of the Company    
Class of warrant or right, exercise price of warrants or rights $ 5.80    
Warrants exercisable beginning date Mar. 10, 2021    
Warrants exercisable expiration date Sep. 10, 2025    
Pure Sunfarms Corp. [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Net proceeds used to finance acquisition of common shares $ 37,500    
Shares purchased of the acquistion 36,958,500