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Asset Retirement Obligations (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2025
USD ($)
Asset Retirement Obligation Disclosure [Abstract]  
Balance at beginning of year $ 174,825
Additional liabilities accrued 168
Revisions in estimated cash outflows 16,882
Disposition of assets (166)
Accretion expense 6,581
Balance at end of year $ 198,290