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Supplemental Financial Information - Schedule of Change in Asset Retirement Obligation (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Asset retirement obligations, beginning of period $ 6,279 $ 6,163
Accretion 254 666
Liabilities settled (83) (77)
Changes due to scope and timing of reclamation 0 (473)
Asset retirement obligations, end of period 6,450 6,279
Less current portion 1,037 1,037
Asset retirement obligations, long-term $ 5,413 $ 5,242