v3.26.3
SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Non-Cash Items in Other (Expense) Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Other Significant Noncash Transactions [Line Items]        
Loss on offtake liability $ 0 $ 0 $ (4,800) $ 0
Other (456) (1,226) (455) (1,191)
Non-cash items included in other expense (655) (8,838) (44,987) (29,338)
Silver Purchase Agreement        
Other Significant Noncash Transactions [Line Items]        
Gain (loss) on sales 3,529 2,860 (32,563) (6,602)
2026 Gold Prepay        
Other Significant Noncash Transactions [Line Items]        
Gain (loss) on sales (4,162) 0 25,731 0
NSR Royalty        
Other Significant Noncash Transactions [Line Items]        
Gain (loss) on sales 8,713 0 (22,950) 0
Convertible loans        
Other Significant Noncash Transactions [Line Items]        
Loss on fair value measurement 0 (863) (3,463) (1,536)
Orion Gold Prepay - derivative        
Other Significant Noncash Transactions [Line Items]        
Gain (loss) on sales 0 (4,209) (3,377) (14,883)
Warrant Liability        
Other Significant Noncash Transactions [Line Items]        
Loss on fair value measurement $ (8,279) $ (5,400) $ (3,110) $ (5,126)