v3.26.1
Share capital - Authorized unlimited common shares, no par value (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Nov. 07, 2025
May 31, 2026
Feb. 28, 2026
May 31, 2025
Feb. 28, 2025
May 31, 2026
May 31, 2025
Nov. 30, 2025
Share capital                
Unlimited common shares authorized           Unlimited   Unlimited
Common Stock, No Par Value   $ 0       $ 0   $ 0
At-the-market offering, net of share issue costs, Number of shares   0 174,410          
At-the-market offering, net of share issue costs, Ascribed value     $ 1,164          
Exercise of options, Number of shares           253,334 350,000  
Exercise of options, Ascribed value   $ 110 166 $ 71 $ 131      
Equity distribution program, aggregate offering amount $ 200,000              
Gross proceeds     $ 1,190          
Average price per share     $ 6.83          
Net proceeds     $ 1,160     $ 1,164    
Share capital                
Share capital                
Beginning balance, Number of shares     171,069,888     171,069,888    
Beginning balance, Ascribed value     $ 225,241     $ 225,241    
At-the-market offering, net of share issue costs, Number of shares     174,410     174,410    
At-the-market offering, net of share issue costs, Ascribed value     $ 1,164     $ 1,164    
Exercise of options, Number of shares   100,000 153,334 86,667 263,333 253,334    
Exercise of options, Ascribed value   $ 158 $ 246 $ 110 $ 195 $ 404    
Shares issued from Restricted Share Units, Number of shares   100,000 1,148,007 119,906 2,647,945 1,248,007    
Shares issued from Restricted Share Units, Ascribed value           $ 1,210    
Ending balance, Number of shares outstanding   172,745,639       172,745,639   171,069,888
Ending balance, Ascribed value   $ 228,019       $ 228,019   $ 225,241