DERIVATIVE AND HEDGING ACTIVITIES - Open Contracts (Details)	Mar. 31, 2021 MMBTU $ / MMBTU $ / bbl bbl
January 2021 - December 2021 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU	2,306,000
January 2021 - December 2021 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Derivative average fixed price \| $ / MMBTU	44.29
January 2021 - December 2021 \| Fixed Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU	3,363,030
January 2021 - December 2021 \| Fixed Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Derivative average fixed price	2.73
January 2021 - December 2021 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl	2,306,000
January 2021 - December 2021 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Derivatives Swap Type Weight Average Price	(0.19)
January 2021 - December 2021 \| Basis Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU	3,363,030
January 2021 - December 2021 \| Basis Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Derivatives Swap Type Weight Average Price	(0.24)
January 2021 - December 2021 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl	2,006,000
January 2021 - December 2021 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Derivatives Swap Type Weight Average Price	(0.37)
January 2022 - December 2022 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl	2,296,800
January 2022 - December 2022 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Derivative average fixed price	48.48
January 2022 - December 2022 \| Fixed Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU	1,297,420
January 2022 - December 2022 \| Fixed Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Derivative average fixed price	3.01
January 2022 - December 2022 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl	2,296,800
January 2022 - December 2022 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Derivative average fixed price	0.48
January 2022 - December 2022 \| Basis Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU	3,686,044
January 2022 - December 2022 \| Basis Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Derivatives Swap Type Weight Average Price	(0.30)
January 2022 - December 2022 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl	2,327,800
January 2022 - December 2022 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Derivatives Swap Type Weight Average Price	(0.04)
January 2022 - December 2022 \| Collars \| Natural gas \| Minimum
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU	2,388,624
Derivative floor price	2.50
January 2022 - December 2022 \| Collars \| Natural gas \| Maximum
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU	2,388,624
Derivative average cap price \| $ / MMBTU	2.65

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- Definition

Nominal volume used to calculate payments on a derivative instrument.

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- Definition

Derivatives Swap Type Weight Average Price

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The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

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The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Average fixed price related to the group of price risk swap derivatives.

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