v3.25.2
Share Capital - Additional Information (Details)
$ / shares in Units, $ in Thousands, $ in Millions
 12 Months Ended
Feb. 23, 2024
USD ($)
Apr. 30, 2025
CAD ($)
shares
Apr. 30, 2025
USD ($)
shares
Apr. 30, 2024
CAD ($)
shares
Apr. 30, 2023
CAD ($)
shares
Apr. 30, 2023
CAD ($)
$ / shares
Apr. 30, 2024
$ / shares
shares
Disclosure Of Classes Of Share Capital [Line Items]              
Share-based payments | $   $ 445   $ 1,535 $ 1,943    
Number of underwritten public offering shares | shares       1,265,000      
Number of shares exercise by underwriter of over allotment option | shares       165,000      
Public offering price for each common share | $ / shares             $ 1
At The Market Equity Offering Facility              
Disclosure Of Classes Of Share Capital [Line Items]              
Number of common shares sold/issued | shares     13,315,850       629,240
Proceeds from sale of common shares | $   $ 12,200   $ 1,800      
Share Capital | Common Shares              
Disclosure Of Classes Of Share Capital [Line Items]              
Shares issued pursuant to option exercise, shares | shares         263,537    
Total gross proceeds from exercise of stock options | $         $ 700    
Shares issued pursuant to option exercise | $         $ 800    
Weighted average share price | $ / shares           $ 4.5  
Shares issued pursuant to conversion of convertible debentures, Number of Shares | shares   5,893,768 5,893,768   309,877    
Convertible debentures     $ 3.0   $ 1,300    
Debt conversion principal debt amount     $ 3.0   $ 1,300 $ 1,300  
Common Shares | Top of Range | At The Market Equity Offering Facility              
Disclosure Of Classes Of Share Capital [Line Items]              
Common stock aggregate gross sales price | $ $ 60.0