v3.26.3
Shareholders' equity - Summary of Movement in Stock Option Plan (Details)
 12 Months Ended
Jun. 30, 2026
shares
$ / shares
Jun. 30, 2025
shares
$ / shares
Number of options    
Balance at the beginning (in shares) | shares 381,686 462,346
Expired (in shares) | shares (280,859) (47,176)
Forfeited (in shares) | shares (2,600) (33,484)
Balance at the end (in shares) | shares 98,227 381,686
Weighted average price    
Balance at the beginning (in dollars per share) | $ / shares $ 15.62 $ 15.21
Expired (in dollars per share) | $ / shares (15.06) (11.77)
Forfeited (in dollars per share) | $ / shares (9.69) (15.40)
Balance at the end (in dollars per share) | $ / shares $ 17.38 $ 15.62