v3.25.4

Mineral Interests and Property, Plant and Equipment, net - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Financing lease right of use asset | $ 206,303 | $ 106,959
Total | 2,842,058 | 2,415,081
Less: Accumulated depreciation | (1,024,694) | (865,611)
Property, plant and equipment, net | 1,817,364 | 1,549,470
Land |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 77,406 | 77,351
Land improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 82,422 | 19,939
Building and leasehold improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 144,744 | 73,543
Asset retirement obligation assets |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 48,734 | 62,301
Mine development and infrastructure costs |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 208,538 | 126,266
Machinery and equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 1,870,215 | 1,435,650
Construction in progress |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 203,696 | $ 513,072

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