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Summary of Significant Accounting Policies (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Jun. 30, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2021 | Oct. 02, 2014
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Inventory Write-down | $ 7,727,000 | $ 21,204,000 | $ 22,467,000 | $ 38,018,000 |  |  |  |  |
Rochester |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Inventory Write-down | 8,900,000 |  | 25,300,000 |  |  |  |  |  |
Rochester | Cost of Sales |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Inventory Write-down | 7,700,000 |  | 22,400,000 |  |  |  |  |  |
Palmarejo gold production royalty |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Aggregate deposit to be received |  |  |  |  |  |  |  |  | $ 22,000,000
Production to be sold, percent |  |  |  |  |  |  |  |  | 50.00%
Price per ounce under agreement |  |  |  |  |  |  |  |  | $ 800
Kensington |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Revenue liability | $ 44,323,000 | $ 15,373,000 | $ 44,323,000 | $ 15,373,000 | $ 45,012,000 | $ 25,016,000 | $ 25,012,000 | $ 15,016,000 |

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