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Share Capital - Disclosure of warrants outstanding and exercisable (Details) - Warrants [Member]
Apr. 30, 2024
Shares
$ / shares
Apr. 30, 2023
Shares
$ / shares
Apr. 30, 2022
Shares
$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Exercise price | $ / shares $ 1.89 $ 1.91 $ 2.68
Number of warrants outstanding 15,437,163 14,771,833 32,424,902
Number of warrants exercisable 15,437,163    
Expiry date of 15-Nov-24 [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Exercise price | $ / shares $ 2    
Number of warrants outstanding 11,705,850    
Number of warrants exercisable 11,705,850    
Expiry date of 15-Nov-24 [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Exercise price | $ / shares $ 1.45    
Number of warrants outstanding 714,150    
Number of warrants exercisable 714,150    
Expiry date of 09-Feb-25 [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Exercise price | $ / shares $ 1.65    
Number of warrants outstanding 1,637,163    
Number of warrants exercisable 1,637,163    
Expiry date of 28-Feb-26 [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Exercise price | $ / shares $ 1.5    
Number of warrants outstanding 1,380,000    
Number of warrants exercisable 1,380,000