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Property, Plant and Equipment
 3 Months Ended
Mar. 31, 2025
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT AND MINING PROPERTIES, NET
Property, plant and equipment and mining properties, net consist of the following:
In thousandsMarch 31, 2025December 31, 2024
Mine development$1,554,357 $1,502,457 
Mineral interests1,683,564 833,564 
Land9,961 9,000 
Facilities and equipment(1)
1,685,851 1,517,170 
Construction in progress117,691 145,732 
Total$5,051,424 $4,007,923 
Accumulated depreciation, depletion and amortization(2)
(2,251,669)(2,190,307)
Property, plant and equipment and mining properties, net$2,799,755 $1,817,616 
(1) Includes $164.7 million and $170.1 million associated with facilities and equipment assets under finance leases at March 31, 2025 and December 31, 2024, respectively.
(2) Includes $67.4 million and $63.3 million of accumulated amortization related to assets under finance leases at March 31, 2025 and December 31, 2024, respectively.