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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2023
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 thousandsDecember 31, 2023December 31, 2022
Mine development$1,358,189 $1,533,385 
Mineral interests809,912 821,112 
Land8,318 8,242 
Facilities and equipment(1)
947,435 800,957 
Construction in progress(2)
612,865 236,019 
Total$3,736,719 $3,399,715 
Accumulated depreciation, depletion and amortization(3)
(2,048,431)(2,009,960)
Property, plant and equipment and mining properties, net$1,688,288 $1,389,755 
(1) Includes $127.6 million and $148.2 million associated with facilities and equipment assets under finance leases at December 31, 2023 and December 31, 2022, respectively.
(2) Includes $471.7 million and $139.7 million of construction costs related to the Rochester Expansion project at December 31, 2023 and December 31, 2022, respectively.
(3) Includes $37.6 million and $80.3 million of accumulated amortization related to assets under finance leases at December 31, 2023 and December 31, 2022, respectively.