v3.26.1
Segment Reporting - Schedule of Segment Expense and Reconciled to Net Loss Before Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Operating expenses:        
Exploration expenses $ 4,566 $ 115 $ 6,631 $ 165
General and administrative expenses 8,174 269 10,890 518
Depreciation expense 36 2 59 3
Operating loss (12,776) (543) (17,580) (843)
Corporate and other expenses 7,947 179 10,327 316
Transaction costs 0 157 0 157
Interest income 503 0 630 0
Interest expense 29 58 74 59
Foreign currency transaction gain/(loss) 1 0 (3) 0
Change in fair value of SAFE (1,216) 0 (4,625) 0
Change in fair value of warrants 727 0 (7,919) 0
Loss before income taxes (12,790) (601) (29,571) (902)
Operating Segments        
Operating expenses:        
Exploration expenses 4,566 115 6,631 165
General and administrative expenses 227 90 563 202
Depreciation expense 36 2 59 3
Operating loss (4,829) (207) (7,253) (370)
United States Mining Operations | Operating Segments        
Operating expenses:        
Exploration expenses 3,751 0 5,616 0
General and administrative expenses 16 0 29 0
Depreciation expense 32 0 54 0
Operating loss (3,799) 0 (5,699) 0
Brazil Mining Operations | Operating Segments        
Operating expenses:        
Exploration expenses 815 115 1,015 165
General and administrative expenses 211 90 534 202
Depreciation expense 4 2 5 3
Operating loss $ (1,030) $ (207) $ (1,554) $ (370)