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Commitments and Contigencies (Details Textual) - USD ($)
3 Months Ended 9 Months Ended 24 Months Ended
Sep. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2023
Jun. 30, 2022
Dec. 31, 2021
Dec. 31, 2020
Oct. 02, 2014
Business Acquisition [Line Items]                      
Palmarejo Gold Stream Agreement, Deferred Revenue Unamortized Balance $ 7,600,000       $ 7,600,000            
Deferred Revenue Recognized 10,167,000   $ 307,000   10,723,000 $ 15,908,000          
Common stock issued under "at the market" stock offering   $ 98,499,000   $ 118,777,000              
Capital commitment since inception         575,000,000            
Capital expenditures incurred but not yet paid         443,000,000            
Surety Bonds Outstanding 326,700,000       326,700,000       $ 315,100,000    
Valued-added Tax Outstanding 26,000,000       26,000,000            
Contract With Customer, Liability, Additional Prepayment 10,000,000       10,000,000            
Minimum | Forecast                      
Business Acquisition [Line Items]                      
Capital expenditures incurred but not yet paid             $ 650,000,000        
Maximum | Forecast                      
Business Acquisition [Line Items]                      
Capital expenditures incurred but not yet paid             $ 670,000,000        
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
Kensington                      
Business Acquisition [Line Items]                      
Deferred Revenue Recognized (10,000,000)   (7,500,000)   (10,454,000) (22,500,000)          
Revenue liability 15,373,000   $ 7,599,000 $ 15,004,000 15,373,000 $ 7,599,000   $ 25,012,000 15,016,000 $ 15,003,000  
Kensington | December 2020 Prepayment [Member]                      
Business Acquisition [Line Items]                      
Revenue liability   $ 15,000,000           $ 15,000,000 15,000,000    
Kensington | June 2021 Prepayment                      
Business Acquisition [Line Items]                      
Revenue liability $ 10,000,000       $ 10,000,000       15,000,000    
Contract With Customer, Liability, Future Prepayments                 $ 25,000,000