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v3.22.4

Note 3 -Business Segments, Sales of Products and Significant Customers (Additional Information) (Details) oz in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) Segment oz | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of Reportable Segments | Segment | 5 |  |
Derivative, loss on derivative | $ | $ 5,800,000 | $ 500,000 | $ 16,400,000
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent | Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent
Trade | $ | 45,146,000 | $ 36,437,000 |
Allowance for doubtful accounts | $ | $ 0 | $ 0 |
Silver Contracts [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Metals contained in concentrates (Ounce) | oz | 3.1 |  |
Gold [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Metals contained in concentrates (Ounce) | oz | 7,580.0 |  |
Zinc [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Metals contained in concentrates (Ounce) | oz | 18.6 |  |
Lead [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Metals contained in concentrates (Ounce) | oz | 12.0 |  |
Environmental Services [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ | $ 474,000 |  |

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