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EQUITY INVESTMENTS (Tables)
 12 Months Ended
Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of investments accounted for by the equity method The Company had no investments accounted for by the equity method as of December 31, 2021. The following table summarizes the Company's equity investments for the Predecessor Period and the years ended December 31, 2020 and 2019 (in thousands):
Carrying ValueLoss from Equity Method Investments
PredecessorPredecessor
December 31, 2020Period from January 1, 2021 through May 17, 2021Year Ended December 31, 2020Year Ended December 31, 2019
Investment in Grizzly Oil Sands ULC$24,816 $342 $377 $32,710 
Investment in Mammoth Energy Services, Inc.— — 10,646 179,524 
Other equity investments— — 32 (2,086)
Total equity investments$24,816 $342 $11,055 $210,148