Other, Net - Summary of Pre-development, reclamation and other (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Income and Expenses [Abstract]
Accretion Expense, Including Asset Retirement Obligations	$ 11,988	$ 11,754	$ 12,154
Other Operating Income (Expense), Net	5,144	4,813	6,267
Gain (Loss) on Termination of Lease	0	(4,051)	0
Covid-19 Related Costs	6,618	15,555	0
Care and maintenance costs	24,928	16,384	0
Temporary Suspension Costs	0	11,199	0
Pre-development, reclamation, and other	$ 48,678	$ 55,654	$ 18,421