v3.26.3
Intangible assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Intangible assets    
Beginning balance $ 17,906 $ 9,280
Additions 28,220 8,103
Less award funding received (4,049)  
Reclassification (725)  
Effect of foreign exchange (330) 523
Ending balance 41,022 17,906
Pilot Mountain    
Intangible assets    
Beginning balance 16,765 8,664
Additions 18,862 7,631
Less award funding received (4,049)  
Reclassification (400)  
Effect of foreign exchange (297) 470
Ending balance 30,881 16,765
Impairment loss 0  
Tempiute    
Intangible assets    
Beginning balance 291  
Additions 8,992 291
Reclassification (325)  
Effect of foreign exchange (5)  
Ending balance 8,953 291
Pilot Mountain North    
Intangible assets    
Additions 113  
Ending balance 113  
Garfield    
Intangible assets    
Beginning balance 452 329
Additions 134 95
Effect of foreign exchange (15) 28
Ending balance 571 452
Stonewall    
Intangible assets    
Beginning balance 60 51
Additions 4 5
Effect of foreign exchange (2) 4
Ending balance 62 60
Kibby Basin    
Intangible assets    
Beginning balance 39 25
Additions 11 12
Effect of foreign exchange (1) 2
Ending balance 49 39
Golconda    
Intangible assets    
Beginning balance 294 207
Additions 73 69
Effect of foreign exchange (10) 18
Ending balance 357 294
White Elephant    
Intangible assets    
Additions 15  
Ending balance 15  
Cinch    
Intangible assets    
Additions 16  
Ending balance 16  
Website    
Intangible assets    
Beginning balance 5 4
Effect of foreign exchange   1
Ending balance $ 5 $ 5