Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Loss Contingencies [Line Items]
Surety Bonds Outstanding	$ 553,000	$ 553,000
Cash collateral for surety bond	5,600	5,600
Contribution to fund asset retirement obligations		4,421	$ 110,000
Long-term asset retirement obligation	140,413	140,413		$ 135,993
Securitization and Inventory Facilities
Loss Contingencies [Line Items]
Letters of credit outstanding	76,800	76,800
Asset retirement obligations
Loss Contingencies [Line Items]
Surety Bonds Outstanding	456,100	456,100
Cash collateral for surety bond	600	600
Reclamation-related obligations	242,600	242,600
Contribution to fund asset retirement obligations	1,800
Long-term asset retirement obligation	$ 140,400	$ 140,400