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Commitments and Contigencies (Details Textual)
ozt in Millions
3 Months Ended 6 Months Ended 36 Months Ended
Jan. 01, 2027
Nov. 20, 2023
USD ($)
oz
$ / oz
Jun. 30, 2024
USD ($)
shares
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
shares
Jun. 30, 2023
USD ($)
Dec. 31, 2026
Mar. 28, 2025
USD ($)
Jul. 08, 2024
USD ($)
Apr. 03, 2024
shares
Apr. 02, 2024
USD ($)
Mar. 31, 2024
USD ($)
Mar. 28, 2024
ozt
shares
Feb. 26, 2024
shares
Dec. 31, 2023
USD ($)
shares
Nov. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 02, 2014
USD ($)
Business Acquisition [Line Items]                                      
Valued-added Tax Outstanding     $ 28,700,000   $ 28,700,000                            
Revenue Recognized     $ 118,000 $ 15,100,000 $ 55,277,000 $ 25,215,000                          
Common stock, shares issued (in shares) | shares     399,240,520   399,240,520                 7,704,725 386,282,957        
Common stock fair value     $ 3,992,000   $ 3,992,000                   $ 3,863,000        
Inflation adjusted royalty payment | $ / oz   25                                  
Surety Bonds Outstanding     $ 343,600,000   $ 343,600,000                   324,800,000        
Kensington Royalty Matter | Settled Litigation                                      
Business Acquisition [Line Items]                                      
Royalty payment | ozt                         2            
Common stock, shares issued (in shares) | shares                   737,210                  
Common stock fair value                     $ 3,000,000                
Kensington Royalty Matter | Settled Litigation | Forecast                                      
Business Acquisition [Line Items]                                      
Royalty payment rate 1.50%           1.25%                        
Common stock fair value               $ 3,750,000                      
Mining Concessions Purchase Agreement Member                                      
Business Acquisition [Line Items]                                      
Cash payment at closing   $ 10,000,000                                  
Cash payment 12 months after closing                               $ 10,000,000      
Cash payment 24 months after closing                               5,000,000      
Total Consideration                               $ 25,000,000      
Mining Concessions Purchase Agreement Member | Subsequent Event                                      
Business Acquisition [Line Items]                                      
Cash payment at closing                 $ 10,000,000                    
Minimum                                      
Business Acquisition [Line Items]                                      
Amount of gold equivalent ounces discovered | oz   450,000                                  
Maximum                                      
Business Acquisition [Line Items]                                      
Amount of gold equivalent ounces discovered | oz   2,000,000                                  
Maximum | Kensington Royalty Matter | Settled Litigation                                      
Business Acquisition [Line Items]                                      
Common stock, shares issued (in shares) | shares                         2,455,000            
Palmarejo gold production royalty                                      
Business Acquisition [Line Items]                                      
Production to be sold, percent                                     50.00%
Price per ounce under agreement                                     $ 800
Aggregate deposit to be received                                     $ 22,000,000.0
Franco-Nevada Gold Stream Agreement                                      
Business Acquisition [Line Items]                                      
Production to be sold, percent     50.00%   50.00%                            
Total consideration         $ 78,000,000                            
Payments to acquire businesses, gross         75,000,000                            
Common shares issued (value)         3,000,000                            
Kensington                                      
Business Acquisition [Line Items]                                      
Revenue Recognized     $ (42,005,000) (15,000,000) (97,005,000) (25,000,000)                          
Revenue liability     43,282,000 $ 45,012,000 43,282,000 $ 45,012,000           $ 55,112,000     55,082,000   $ 15,127,000 $ 25,016,000  
Kensington | December 2023 Prepayment                                      
Business Acquisition [Line Items]                                      
Revenue liability     12,000,000   12,000,000             $ 25,000,000              
Rochester | September 2023 Prepayment                                      
Business Acquisition [Line Items]                                      
Revenue liability                             17,500,000        
Rochester | June 2024 Prepayment                                      
Business Acquisition [Line Items]                                      
Revenue liability     17,500,000   17,500,000                            
Wharf | September 2023 Prepayment                                      
Business Acquisition [Line Items]                                      
Revenue liability                             $ 12,500,000        
Wharf | June 2024 Prepayment                                      
Business Acquisition [Line Items]                                      
Revenue liability     $ 12,500,000   $ 12,500,000