v3.25.4
Asset Retirement Obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Asset retirement obligation    
Balance at beginning of year $ 174,825 $ 165,869
Additional liabilities accrued 486 186
Revisions in estimated cash outflows 16,689 974
Disposition of assets (339) (586)
Accretion expense 9,203 8,382
Balance at end of year $ 200,864 $ 174,825