v3.26.3
Investments in subsidiaries (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2025
Investments in subsidiaries      
Non-current investments $ 36,382 $ 36,382 $ 5,897
Golden Metal Resources, LLC      
Investments in subsidiaries      
Non-current investments $ 30,485 30,485  
Intercompany loan receivable converted into capital contribution   30,485  
Ownership interest 100.00%    
Pilot Metals Inc.      
Investments in subsidiaries      
Non-current investments $ 5,880 5,880 5,880
Ownership interest 100.00%    
BFM Resources Inc.      
Investments in subsidiaries      
Non-current investments $ 17 $ 17 $ 17
Ownership interest 100.00%    
Guardian Exploration Ltd      
Investments in subsidiaries      
Ownership interest 100.00%    
Guardian Exploration Inc      
Investments in subsidiaries      
Ownership interest 100.00%    
GMET Tungsten Holding Co.      
Investments in subsidiaries      
Ownership interest 100.00%    
Advance Tungsten Reserve, Inc.      
Investments in subsidiaries      
Ownership interest 100.00%    
Tempiute Inc.      
Investments in subsidiaries      
Ownership interest 100.00%