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ASSET RETIREMENT OBLIGATIONS (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2021
USD ($)
Activity related to ARO liability  
Liability for asset retirement obligations at the beginning of the period $ 10,583
Additions 111
Accretion expense 367
Revisions in estimated cash flows 725
Liability for asset retirement obligations at the end of the period $ 11,786