Revenue and Cost of Sales (Details 1) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Revenue and Cost of Sales | ||||
| Production costs | $ 16,855 | $ 9,992 | $ 41,943 | $ 27,963 |
| Write down of equipment and materials and supplies inventory | 31 | 249 | 49 | 413 |
| Depreciation and depletion | 1,667 | 896 | 6,392 | 2,616 |
| Total cost | $ 18,553 | $ 11,137 | $ 48,384 | $ 30,992 |