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ASSET RETIREMENT OBLIGATIONS (Tables)
6 Months Ended
Jun. 30, 2022
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Asset Retirement Obligation Changes A roll-forward of the Company's asset retirement obligation is as follows (in thousands):
Amount
Balance as of December 31, 2021
$225,315 
Additional liabilities incurred2,072 
Accretion expense8,102 
Liabilities settled(8,385)
Balance as of June 30, 2022
$227,104 
Current portion24,000 
Long-term portion$203,104