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ASSET RETIREMENT OBLIGATIONS - Schedule of Roll-Forward Activity (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Change in asset retirement obligations    
Balance as of December 31, 2022 $ 291,026  
Additional liabilities incurred 1,480  
Accretion expense 7,648  
Liabilities settled (6,231)  
Balance as of June 30, 2023 293,923  
Current portion 25,557 $ 25,557
Long-term portion $ 268,366 $ 265,469