v3.26.3
Exploration Expenditures - Schedule of Exploration Expenditures (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Income Statement Expense, Caption [Line Items]    
Exploration expenditures $ 18,039 $ 4,135
Less: reimbursements recognized (1,963) 0
Net exploration expense 16,076 4,135
Feasibility Study and Engineering [Member]    
Disaggregation of Income Statement Expense, Caption [Line Items]    
Exploration expenditures 10,354 1,112
Field Management and Other [Member]    
Disaggregation of Income Statement Expense, Caption [Line Items]    
Exploration expenditures 2,765 900
Drilling [Member]    
Disaggregation of Income Statement Expense, Caption [Line Items]    
Exploration expenditures 2,527 1,456
Metallurgical [Member]    
Disaggregation of Income Statement Expense, Caption [Line Items]    
Exploration expenditures 1,355 214
Geologist And Field Staff [Member]    
Disaggregation of Income Statement Expense, Caption [Line Items]    
Exploration expenditures $ 1,038 $ 453