Revenue (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
|
| Statement [Line Items] | ||||
| Total sales revenue | $ 19,372 | $ 27,837 | $ 65,499 | $ 93,524 |
| Total derivative pricing adjustments | (293) | (1,325) | 824 | 362 |
| Gross revenue | 19,079 | 26,512 | 66,323 | 93,886 |
| Proceeds before intended use | 12,934 | 990 | 23,536 | 1,695 |
| Treatment and selling costs | (1,417) | (5,176) | (8,789) | (19,190) |
| Total | 30,596 | 22,326 | 81,070 | 76,391 |
| Silver [Member] | ||||
| Statement [Line Items] | ||||
| Sales revenue | 17,212 | 13,630 | 45,950 | 49,011 |
| Derivative pricing adjustments | (351) | (1,547) | 755 | (887) |
| Gross revenue | 16,861 | 12,083 | 46,705 | 48,124 |
| Zinc [Member] | ||||
| Statement [Line Items] | ||||
| Sales revenue | 108 | 9,509 | 11,883 | 29,431 |
| Derivative pricing adjustments | 73 | 235 | 155 | 890 |
| Gross revenue | 181 | 9,744 | 12,038 | 30,321 |
| Lead [Member] | ||||
| Statement [Line Items] | ||||
| Sales revenue | 2,048 | 4,482 | 7,312 | 14,274 |
| Derivative pricing adjustments | (41) | (105) | (175) | 53 |
| Gross revenue | 2,007 | 4,377 | 7,137 | 14,327 |
| Other By-Products [Member] | ||||
| Statement [Line Items] | ||||
| Sales revenue | 4 | 216 | 354 | 808 |
| Derivative pricing adjustments | 26 | 92 | 89 | 306 |
| Gross revenue | $ 30 | $ 308 | $ 443 | $ 1,114 |