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Share Capital (Details)
$ in Thousands
 12 Months Ended
May 26, 2021
shares
May 25, 2021
CAD ($)
$ / shares
$ / item
shares
Feb. 22, 2021
CAD ($)
$ / shares
$ / item
shares
Dec. 13, 2018
CAD ($)
$ / shares
Y
shares
Oct. 31, 2021
CAD ($)
$ / shares
shares
Oct. 31, 2020
CAD ($)
$ / shares
Oct. 31, 2019
$ / shares
Ifrs Class of Warrant or Right [Line Items]              
Gross proceeds | $   $ 23,184 $ 23        
Number of common shares for each unit   1 1        
Number of securities into which the warrant or right may be converted         1    
Warrants exercise price | $ / shares         $ 2.5995 $ 0.4159 $ 0.6083
Warrants issued         58,823,529    
Share issuance costs | $         $ 3,456    
Share issuance costs | $         $ 5,595    
Deferred tax asset | $   $ 1,145       $ 250  
Warrant              
Ifrs Class of Warrant or Right [Line Items]              
Number of common share warrants for each unit   1 1        
Warrants exercise price | $ / shares   $ 12.25 $ 0.58        
Warrants term   36 months 36 months        
Fair value of warrants | $   $ 2,911 $ 4,707        
Warrant | Share price              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   9.16          
Warrant | Exercise price              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   12.25 0.58        
Warrant | Expected term              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   3 3        
Warrant | Volatility              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   56 71        
Warrant | Risk free interest rate              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   0.49 0.32        
Broker Warrants              
Ifrs Class of Warrant or Right [Line Items]              
Warrants exercise price | $ / shares       $ 0.75      
Fair value of warrants | $       $ 93      
Cash commission fee (as a percent)   6.00% 6.00%        
Cash commission fee for presidents list (as a percent)   3.00% 3.00%        
Warrants issued   206,348 3,920,587 504,733      
Broker Warrants | Expected term              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input | Y       2      
Broker Warrants | Volatility              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input       130      
Broker Warrants | Risk free interest rate              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input       1.60      
Broker Warrants One              
Ifrs Class of Warrant or Right [Line Items]              
Fair value of warrants | $   $ 455 $ 1,033        
Number of warrants in each unit   1.5 1.5        
Warrants issued   137,565 2,613,725        
Broker Warrants One | Share price              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   9.16 0.70        
Broker Warrants One | Exercise price              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   9.60 0.48        
Broker Warrants One | Expected term              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   3 3        
Broker Warrants One | Volatility              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   56 71        
Broker Warrants One | Risk free interest rate              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   1.30 0.32        
Broker Warrants Two              
Ifrs Class of Warrant or Right [Line Items]              
Fair value of warrants | $   $ 181 $ 471        
Warrants issued   68,783 1,306,862        
Broker Warrants Two | Share price              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   9.16 0.70        
Broker Warrants Two | Exercise price              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   12.25 0.58        
Broker Warrants Two | Expected term              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   3 3        
Broker Warrants Two | Volatility              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   56 71        
Broker Warrants Two | Risk free interest rate              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input   0.49 0.32        
Pre-consolidation              
Ifrs Class of Warrant or Right [Line Items]              
Number of units issued 36,225,000 36,225,000 47,916,665        
Price per unit | $ / item   0.64 0.48        
Pre-consolidation | Warrant | Share price              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input     0.70        
Pre-consolidation | Broker Warrants | Share price              
Ifrs Class of Warrant or Right [Line Items]              
Warrant, measurement input | $ / shares       0.36      
Post-consolidation              
Ifrs Class of Warrant or Right [Line Items]              
Number of units issued 2,415,000 2,415,000 3,194,445        
Price per unit | $ / item   9.60 7.20