v3.26.1
DEBT - Narrative (Details)
$ / shares in Units, shares in Millions
3 Months Ended 6 Months Ended
Mar. 23, 2026
USD ($)
d
$ / shares
Mar. 16, 2026
USD ($)
oz
Feb. 28, 2025
d
Jan. 15, 2025
shares
Sep. 20, 2023
USD ($)
oz
Dec. 13, 2021
USD ($)
derivative
oz
Jun. 30, 2026
USD ($)
derivative
oz
Mar. 31, 2026
USD ($)
oz
shares
Jun. 30, 2025
USD ($)
Mar. 31, 2025
oz
Jun. 30, 2026
USD ($)
derivative
oz
shares
Jun. 30, 2025
USD ($)
Dec. 31, 2025
Feb. 22, 2023
USD ($)
$ / shares
Debt Instrument [Line Items]                            
Loss on loan extinguishment             $ 0   $ 782,000   $ 7,110,000 $ 782,000    
2026 Convertible Debentures | Convertible loans                            
Debt Instrument [Line Items]                            
Principal amount $ 287,500,000                          
Gross proceeds from 2026 Gold Prepay 274,500,000                          
Debt issuance costs, current, net $ 13,000,000.0                          
Interest fixed rate (as percent) 3.75%                          
Debt instrument, convertible, conversion ratio 0.5194805                          
Conversion price (in dollars per share) | $ / shares $ 1.93                          
Redemption price, percentage 100.00%                          
Debt conversion percentage 130.00%                          
Threshold trading days | d 20                          
Consecutive trading days | d 30                          
Interest rate, effective (as percent) 4.72%                          
Accrued interest                     $ 3,000,000.0      
2026 Gold Prepay                            
Debt Instrument [Line Items]                            
Gross proceeds from 2026 Gold Prepay   $ 144,100,000                        
Debt issuance costs, current, net   $ 5,900,000                        
Interest rate, effective (as percent)   13.50%                        
Principal amount   $ 150,000,000.0                        
Number of ounces to be delivered | oz   39,978                        
Accordion feature   $ 100,000,000                        
Accordion feature, term   24 months                        
Silver Purchase Agreement                            
Debt Instrument [Line Items]                            
Interest rate, effective (as percent)             21.90%       21.90%   21.90%  
Number of ounces to be delivered | oz           1,200,000                
Notional amount           $ 30,000,000.0                
Number of ounces delivered | oz           2,500,000                
Number of embedded derivatives | derivative           2 2       2      
Delivered per arrangement | oz             2,065     94,158 96,223      
Quarterly aggregate total | oz                     1,200,000      
Silver Purchase Agreement | Milestone One                            
Debt Instrument [Line Items]                            
Number of ounces to be delivered | oz           300,000                
Metal production to be issued (as percent)           100.00%                
Silver Purchase Agreement | Milestone Two                            
Debt Instrument [Line Items]                            
Number of ounces to be delivered | oz           400,000                
Metal production to be issued (as percent)           50.00%                
Silver Purchase Agreement | Milestone Three                            
Debt Instrument [Line Items]                            
Number of ounces to be delivered | oz           400,000                
Metal production to be issued (as percent)           10.00%                
Silver Purchase Agreement | Milestone Four                            
Debt Instrument [Line Items]                            
Number of ounces to be delivered | oz           100,000                
Metal production to be issued (as percent)           20.00%                
2023 Convertible Debentures                            
Debt Instrument [Line Items]                            
Loss on loan extinguishment               $ 4,400,000            
2023 Convertible Debentures | Convertible loans                            
Debt Instrument [Line Items]                            
Principal amount               $ 65,000,000.0           $ 65,000,000
Interest fixed rate (as percent)                           8.00%
Conversion price (in dollars per share) | $ / shares                           $ 3.38
Redemption price, percentage     104.00%         104.00%            
Debt conversion percentage     85.00%                      
Threshold trading days | d     5                      
Consecutive trading days | d     10                      
Interest rate, effective (as percent)             9.40%       9.40%      
Accrued interest               $ 18,000,000.0            
Holders discount percentage     15.00%                      
Debt instrument, mandatory redemption price, percentage               4.00%            
Repayments of convertible debt               $ 2,600,000            
Debt instrument redemption premium amount               700,000            
Interest payable               $ 18,700,000            
Shares issued (in shares) | shares               8.1            
Convertible shares value               $ 13,400,000            
Cash payment               5,300,000            
Payment for debt extinguishment or debt prepayment cost               72,900,000            
Loss on loan extinguishment               4,400,000            
Orion Convertible Loan                            
Debt Instrument [Line Items]                            
Loss on loan extinguishment               1,600,000            
Orion Convertible Loan | Convertible loans                            
Debt Instrument [Line Items]                            
Principal amount           $ 50,000,000                
Interest fixed rate (as percent)             8.00%       8.00%      
Interest rate, effective (as percent)             16.72%       16.72%      
Accrued interest               20,400,000            
Repayments of convertible debt               50,000,000.0            
Shares issued (in shares) | shares                     3.0      
Convertible shares value                     $ 5,300,000      
Payment for debt extinguishment or debt prepayment cost               69,700,000            
Loss on loan extinguishment               1,600,000            
Fair value of shares issued, net               5,200,000            
Stock repurchased during period, value               75,000,000.0            
Orion Convertible Loan | Convertible loans | 2025 Orion Warrants                            
Debt Instrument [Line Items]                            
Warrants issued (in shares) | shares       5.0                    
Orion Gold Prepay                            
Debt Instrument [Line Items]                            
Interest rate, effective (as percent)             29.10%       29.10%      
Principal amount         $ 20,000,000.0                  
Notional amount           $ 41,900,000                
Quarterly aggregate total | oz         13,333 30,400                
Payment for debt extinguishment or debt prepayment cost               22,400,000            
Loss on loan extinguishment               $ 1,100,000            
Number of ounces required to deliver, first delivery | oz         1,123 3,100                
Number of ounces required to deliver, second delivery | oz           2,100                
Quarterly delivery | oz         1,110                  
Number of ounces required to deliver, outstanding deliveries | oz               4,440