INVENTORIES - Narrative (Details) - CAD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Aug. 31, 2022 |
Aug. 31, 2021 |
|
| Inventories [Line Items] | ||
| Inventory expensed in cost of sales | $ 95,638 | $ 58,605 |
| Inventory provision and plant waste included in cost of sales | 10,252 | 26,177 |
| Inventory provision relating to excess and unsaleable inventories | 4,048 | 15,039 |
| Inventory write-down related to adjustments to net realizable value | 4,569 | 21,097 |
| Plant waste included in cost of sales | 5,706 | 6,273 |
| Realized loss on fair value on inventories sold and other inventory charges (Note 7) | 35,204 | 35,721 |
| Realized loss on fair value on inventories sold | 31,133 | 19,489 |
| Cost of sales | ||
| Inventories [Line Items] | ||
| Inventory write-down related to adjustments to net realizable value | 498 | 4,865 |
| Fair value adjustments | ||
| Inventories [Line Items] | ||
| Inventory write-down related to adjustments to net realizable value | $ 4,071 | $ 16,232 |