Biological Assets and Inventory - Schedule of Changes in Carrying Amount of Biological Assets (Detail) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of reconciliation of changes in biological assets [abstract]    
Biological assets - beginning of year $ 1,795  
Gain on revaluation of biological assets 11,620 $ 2,179
Increase due to acquisition of Peace Naturals   866
Transferred to inventory upon harvest (9,693) (1,250)
Biological assets - end of year $ 3,722 $ 1,795