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Share Capital - Details of Warrants and Finder's Warrants Outstanding (Details) - Finder's Warrants
 9 Months Ended
Jan. 31, 2024
shares
$ / shares
Range One  
Disclosure Of Classes Of Share Capital [Line Items]  
Expiry Date Feb. 03, 2026 [1]
Exercise price $ | $ / shares $ 22.53 [1]
Remaining life (year) 2 years 3 days [1]
Warrants outstanding | shares 130,111 [1]
Range Two  
Disclosure Of Classes Of Share Capital [Line Items]  
Expiry Date Dec. 08, 2028 [2]
Exercise price $ | $ / shares $ 1.34 [2]
Remaining life (year) 4 years 10 months 9 days [2]
Warrants outstanding | shares 56,650 [2]
[1] Exercise price of US $16.81. The figure in the table above is translated at the January 31, 2024 rate.
[2] Exercise price of US $1.00. The figure in the table above is translated at the January 31, 2024 rate.