Quarterly report pursuant to Section 13 or 15(d)

ASSET RETIREMENT OBLIGATIONS (Details)

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ASSET RETIREMENT OBLIGATIONS (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Asset Retirement Obligations - Changes to Asset Retirement Obligation (Details)      
Asset retirement obligations, beginning of period $ 498,815 $ 466,430  
Liabilities settled (3,788) (8,642)  
Accretion expense 7,969 7,510  
Liabilities acquired 18,161    
Liabilities incurred   110  
Revisions of estimated liabilities 8,654 3,798  
Asset retirement obligations, end of period 529,811 469,206  
Less: Current portion (37,745) (9,859) $ (31,553)
Long-term $ 492,066 $ 459,347 $ 467,262