Property, Plant and Equipment - Schedule of Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands |
Sep. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Schedule of Property, Plant and Equipment, Net [Line Items] | ||
| Less: accumulated depreciation, depletion, and amortization | $ (242,821) | $ (201,055) |
| Total property, plant, and equipment, net | 489,170 | 482,019 |
| Plant and equipment [Member] | ||
| Schedule of Property, Plant and Equipment, Net [Line Items] | ||
| Property, plant and equipment, gross | 373,891 | 331,899 |
| Mining property and mineral rights [Member] | ||
| Schedule of Property, Plant and Equipment, Net [Line Items] | ||
| Property, plant and equipment, gross | 123,910 | 120,532 |
| Construction in process [Member] | ||
| Schedule of Property, Plant and Equipment, Net [Line Items] | ||
| Property, plant and equipment, gross | 17,581 | 31,048 |
| Capitalized mine development costs [Member] | ||
| Schedule of Property, Plant and Equipment, Net [Line Items] | ||
| Property, plant and equipment, gross | $ 216,609 | $ 199,595 |