v3.26.3
Shareholders' equity - Award Outstanding (Details) - shares
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Number of options    
Beginning balance of awards outstanding (in shares) 1,389,784 1,279,043
Award granted (in shares) 586,750 606,356
Awards exercised (in shares) (317,066) (362,492)
Award forfeited (in shares) (119,000) (133,123)
Ending balance of awards outstanding (in shares) 1,540,468 1,389,784
DSU    
Number of options    
Beginning balance of awards outstanding (in shares) 236,442 172,086
Award granted (in shares) 78,000 64,356
Awards exercised (in shares) 0 0
Award forfeited (in shares) 0 0
Ending balance of awards outstanding (in shares) 314,442 236,442
PSU    
Number of options    
Beginning balance of awards outstanding (in shares) 688,300 499,800
Award granted (in shares) 254,375 271,000
Awards exercised (in shares) 0 0
Award forfeited (in shares) (101,500) (82,500)
Ending balance of awards outstanding (in shares) 841,175 688,300
RSU    
Number of options    
Beginning balance of awards outstanding (in shares) 465,042 607,157
Award granted (in shares) 254,375 271,000
Awards exercised (in shares) (317,066) (362,492)
Award forfeited (in shares) (17,500) (50,623)
Ending balance of awards outstanding (in shares) 384,851 465,042