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COMMITMENTS AND CONTINGENCIES (Details) $ in Millions		12 Months Ended
	Feb. 26, 2019 USD ($)	Dec. 31, 2020 contract item
Commitments and contingencies
Number of long-term natural gas sales contracts to which the entity is committed | contract		12
Gathering, transportation and sales | West Texas
Commitments and contingencies
Number of long-term crude oil sales contracts to which the entity is committed | item		2
Gathering, transportation and sales | West Texas | Minimum
Commitments and contingencies
Period of commitment for production from the date of first production		1 year
Gathering, transportation and sales | West Texas | Maximum
Commitments and contingencies
Period of commitment for production from the date of first production		20 years
Litigation Against Vodenichar
Commitments and contingencies
Litigation Settlement, Amount Awarded to Other Party | $	$ 9.1

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Represents the number of long-term crude oil sales contracts to which the entity is committed.

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Represents the number of long-term natural gas sales contracts to which the entity is committed.

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Represents the period of commitment for production from the date of first production.

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Amount awarded to other party in judgment or settlement of litigation.

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