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v3.25.1

Note 2 - Business Segments and Sales of Products - Sales of Products (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | $ 261,339 | $ 189,528
Less: Smelter and refining charges | (6,712) | (13,014)
Silver Contracts [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 118,153 | 86,233
Gold [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 87,188 | 67,415
Lead [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 22,106 | 19,483
Zinc [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 33,125 | 24,964
Copper [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 391 | 0
Total Metal [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 254,251 | 185,081
Environmental Remediation Services [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | $ 7,088 | $ 4,447

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