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Convertible Debentures - Reconciliation of convertible debentures (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Apr. 01, 2021
Apr. 10, 2019
Oct. 31, 2021
Oct. 31, 2020
Disclosure of detailed information about borrowings [line items]        
Conversion of convertible debentures     $ 35,121 $ 550
Less current portion     (946) (14,446)
Long-term     7,217 11,376
Unsecured convertible debentures        
Disclosure of detailed information about borrowings [line items]        
Convertible debentures, beginning of year     25,822 19,664
Debt assumed     18,809  
Revaluation on amendment of debenture     683 (3,808)
Cash advances from debt     980 9,115
Debt issuance to settle liabilities       2,700
Debt transaction costs paid       (260)
Conversion of convertible debentures     (35,172) (550)
Transfer of warrants component to equity       (420)
Transfer of conversion component to equity     (946) (523)
Transfer of conversion component to derivative liability       (921)
Repayment of debt $ (367) $ (1,500) (4,906) (1,637)
Accretion on convertible debentures     2,751 2,462
Total     8,021 25,822
Less current portion     (946) (14,446)
Long-term     $ 7,075 $ 11,376