v3.25.2
Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Property, plant and equipment    
Operational Mining Properties Gross $ 1,587,846 $ 1,502,457
Mineral Interest 1,683,564 833,564
Land 9,961 9,000
Buildings and Improvements, Gross [1] 1,706,072 1,517,170
Property, Plant and Equipment, Gross 5,122,390 4,007,923
Accumulated depreciation and amortization [2] (2,327,703) (2,190,307)
Construction in Progress, Gross 134,947 145,732
Property, plant and equipment and mining properties, net $ 2,794,687 $ 1,817,616
[1] Includes $164.7 million and $170.1 million associated with facilities and equipment assets under finance leases at June 30, 2025 and December 31, 2024, respectively.
[2] Includes $77.5 million and $63.3 million of accumulated amortization related to assets under finance leases at June 30, 2025 and December 31, 2024, respectively.