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Reclamation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract]                
Asset Retirement Obligation $ 208,016 $ 186,663 $ 208,016 $ 186,663 $ 207,960 $ 202,431 $ 184,606 $ 180,156
Asset Retirement Obligation, Accretion Expense, Excluding Held for Sale Disposal Group. 4,153 3,564 12,219 10,482        
Additions and changes to estimates (2,682) 0 (2,682) 0        
Asset Retirement Obligation, Liabilities Settled $ (1,415) $ (1,507) $ (3,952) $ (3,975)