Leases - Schedule of Components of Expense and Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Fixed operating lease expense	$ 11,467	$ 17,695
Variable operating lease expense	10,752	6,884
Total operating lease expense	22,219	24,579
Operating lease payments	22,020	25,330
ROU assets obtained in exchange for operating lease obligations	0	0
Amortization of right of use assets	24,206	27,846	$ 24,066
Interest expense	2,751	3,501
Total finance lease expense	$ 26,957	$ 31,347
Weighted average remaining lease term (in years)	1 year 7 months 13 days	2 years 10 days
Weighted average discount rate	6.53%	6.21%
Longwall Shields
Lessee, Lease, Description [Line Items]
Operating lease payments	$ 0	$ 18,380