Commitments and Contingencies (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Loss Contingencies [Line Items]
Surety Bonds Outstanding	$ 488,800
Cash collateral for surety bond	5,600
Contribution to fund asset retirement obligations	3,745	$ 2,664
Fund for asset retirement obligations	146,010		$ 142,266
Securitization and Inventory Facilities
Loss Contingencies [Line Items]
Letters of credit outstanding	78,100
Asset retirement obligations
Loss Contingencies [Line Items]
Surety Bonds Outstanding	402,700
Cash collateral for surety bond	600
Reclamation-related obligations	269,100
Contribution to fund asset retirement obligations	3,700
Fund for asset retirement obligations	$ 146,000