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Non-controlling interest - Summarized financial information (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Ifrs Noncontrolling Interest [Line Items]    
Total current assets $ 46,287 $ 19,281
Total non-current assets 199,928 50,530
Total current liabilities (40,787) (27,464)
Total non-current liabilities (53,424) (30,624)
Revenue 181,123 83,265
Net loss (35,037) (6,354)
Non-controlling interest    
Ifrs Noncontrolling Interest [Line Items]    
Total current assets 6,137 2,540
Total non-current assets 38,577 3,696
Total current liabilities (6,731) (942)
Total non-current liabilities (456) (1,080)
Revenue 17,869 6,011
Net loss $ 1,930 $ 1,320