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FEDERAL ROYALTY RECOVERY	12 Months Ended
FEDERAL ROYALTY RECOVERY	Dec. 31, 2017
Federal Royalty Recovery [Abstract]
FEDERAL ROYALTY RECOVERY	FEDERAL ROYALTY RECOVERY In July 2017, we received a federal royalty recovery totaling $14.1 million as part of a multi-year federal royalty refund claim. Approximately $9.6 million of the refund was recognized as other operational income and $4.5 million as a reduction of lease operating expenses during the period from March 1, 2017 through December 31, 2017 (Successor). Included in SG&A expenses for the period from March 1, 2017 through December 31, 2017 (Successor) is a $3.9 million success-based consulting fee incurred in connection with the federal royalty recovery.