Mineral Interests and Property, Plant and Equipment, net - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Mineral interests	$ 147,700	$ 147,700
Mineral properties, accumulated depletion	(67,300)	(59,100)
Depreciation and depletion	127,356	115,279	$ 141,418
Capitalized interest	$ 12,100	$ 1,400