Biological Assets and Inventory - Schedule of the Effect of Changes in Fair Values of Biological Assets and Inventory (Detail) - CAD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Disclosure of reconciliation of changes in biological assets [abstract] | ||
| Unrealized change in fair value of biological assets | $ (11,620) | $ (2,179) |
| Realized fair value increments on inventory sold during the year | 3,956 | 266 |
| Net effect of changes in fair value of biological assets and inventory | $ (7,664) | $ (1,913) |