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Financial Instruments and Risk Management - Maturities of financial liabilities (Details) - Liquidity risk - CAD ($)
$ in Thousands
Oct. 31, 2021
Oct. 31, 2020
Maturities of financial liabilities    
Contractual cash flows $ 91,062 $ 61,719
Accounts payable and accrued liabilities    
Maturities of financial liabilities    
Contractual cash flows 18,532 6,421
Notes payable    
Maturities of financial liabilities    
Contractual cash flows 17,493 4,528
Convertible debentures    
Maturities of financial liabilities    
Contractual cash flows 8,163 25,822
Derivative liability    
Maturities of financial liabilities    
Contractual cash flows 11,673 764
Undiscounted lease obligations    
Maturities of financial liabilities    
Contractual cash flows 35,201 24,184
Less than one year    
Maturities of financial liabilities    
Contractual cash flows 43,512 26,089
Less than one year | Accounts payable and accrued liabilities    
Maturities of financial liabilities    
Contractual cash flows 18,532 6,421
Less than one year | Notes payable    
Maturities of financial liabilities    
Contractual cash flows 5,600 1,939
Less than one year | Convertible debentures    
Maturities of financial liabilities    
Contractual cash flows 946 14,446
Less than one year | Derivative liability    
Maturities of financial liabilities    
Contractual cash flows 9,980  
Less than one year | Undiscounted lease obligations    
Maturities of financial liabilities    
Contractual cash flows 8,454 3,283
1-3 years    
Maturities of financial liabilities    
Contractual cash flows 14,544 11,432
1-3 years | Notes payable    
Maturities of financial liabilities    
Contractual cash flows 78 2,290
1-3 years | Derivative liability    
Maturities of financial liabilities    
Contractual cash flows 1,693  
1-3 years | Undiscounted lease obligations    
Maturities of financial liabilities    
Contractual cash flows 12,773 9,142
3-5 years    
Maturities of financial liabilities    
Contractual cash flows 25,354 17,637
3-5 years | Notes payable    
Maturities of financial liabilities    
Contractual cash flows 11,755 162
3-5 years | Convertible debentures    
Maturities of financial liabilities    
Contractual cash flows 7,217 11,376
3-5 years | Derivative liability    
Maturities of financial liabilities    
Contractual cash flows   764
3-5 years | Undiscounted lease obligations    
Maturities of financial liabilities    
Contractual cash flows 6,382 5,335
Greater than five years    
Maturities of financial liabilities    
Contractual cash flows 7,652 6,561
Greater than five years | Notes payable    
Maturities of financial liabilities    
Contractual cash flows 60 137
Greater than five years | Undiscounted lease obligations    
Maturities of financial liabilities    
Contractual cash flows $ 7,592 $ 6,424