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Financial Instruments and Risk Management - Foreign currency risk (Details)
€ in Thousands, £ in Thousands, $ in Thousands, $ in Thousands
12 Months Ended
Oct. 31, 2021
CAD ($)
Oct. 31, 2020
CAD ($)
Oct. 31, 2021
GBP (£)
Oct. 31, 2021
EUR (€)
Oct. 31, 2021
USD ($)
Disclosure of nature and extent of risks arising from financial instruments [line items]          
Percentage of fixed interest rate borrowings 84.00% 100.00% 84.00% 84.00% 84.00%
Accounts receivable $ 6,494 $ 2,673      
Accounts payable and accrued liabilities 18,532 6,421      
Foreign currency risk | Currency in which supplementary information is displayed [member]          
Disclosure of nature and extent of risks arising from financial instruments [line items]          
Cash 4,032 975 £ 1,323 € 139 $ 2,570
Accounts receivable 889 653 474 73 342
Accounts payable and accrued liabilities (4,406) (1,728) (609) (1,281) (2,516)
Net monetary assets $ 515 (100) £ 1,188 € (1,069) $ 396
United States dollars | Foreign currency risk | Currency in which supplementary information is displayed [member]          
Disclosure of nature and extent of risks arising from financial instruments [line items]          
Percentage of increase in exchange rate 5.00%        
Percentage of decrease in exchange rate 5.00%        
Increase in impact of carrying value of net monetary assets $ 21 34      
Decrease in impact of carrying value of net monetary assets $ 21        
Euro | Foreign currency risk | Currency in which supplementary information is displayed [member]          
Disclosure of nature and extent of risks arising from financial instruments [line items]          
Percentage of increase in exchange rate (5.00%)        
Percentage of decrease in exchange rate 5.00%        
Increase in impact of carrying value of net monetary assets $ 29 39      
Decrease in impact of carrying value of net monetary assets $ 29        
GBP | Foreign currency risk | Currency in which supplementary information is displayed [member]          
Disclosure of nature and extent of risks arising from financial instruments [line items]          
Percentage of increase in exchange rate 5.00%        
Percentage of decrease in exchange rate 5.00%        
Increase in impact of carrying value of net monetary assets $ 37 $ 0      
Decrease in impact of carrying value of net monetary assets $ 37