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ASSET RETIREMENT OBLIGATIONS Asset Retirement Obligations Level 4 (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Asset Retirement Obligation, Roll Forward Analysis    
Balance at beginning of year $ 37,557 $ 36,698
Accretion Expense 1,176 1,106
Revisions in estimated cash flows 11,348 1,412
Liabilities settled 1,084 1,659
Balance at end of year $ 48,997 $ 37,557