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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 |  |

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