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ASSET RETIREMENT OBLIGATIONS (Tables)
3 Months Ended
Mar. 31, 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 incurred1,748 
Accretion expense4,019 
Liabilities settled(5,131)
Balance as of March 31, 2022
$225,951 
Current portion24,000 
Long-term portion$201,951