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EQUITY INVESTMENTS (Tables)
9 Months Ended
Sep. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Equity Method Investments
Investments accounted for by the equity method during the periods presented consisted of the following:
Carrying valueLoss from equity method investments
PredecessorPredecessor
December 31, 2020Three Months Ended September 30, 2020Period from January 1, 2021 through May 17, 2021Nine Months Ended September 30, 2020
Investment in Grizzly Oil Sands ULC$24,816 $(153)$(342)$(341)
Investment in Mammoth Energy— — — (10,646)
$24,816 $(153)$(342)$(10,987)