DERIVATIVE AND HEDGING ACTIVITIES - Open Contracts (Details)	1 Months Ended	2 Months Ended	3 Months Ended		12 Months Ended
	Oct. 31, 2019	Dec. 31, 2019 MMBTU $ / MMBTU $ / bbl bbl	Mar. 31, 2020 MMBTU $ / MMBTU $ / bbl bbl	Mar. 31, 2019	Dec. 31, 2019 MMBTU $ / MMBTU $ / bbl bbl
Derivative and hedging activities
Financial Designation, Predecessor and Successor [Fixed List]	Successor	Successor	Successor	Predecessor	Successor
April 2020 - June 2020 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			91,000
Floors (in dollars per Mmbtu's/Bbl's)			55.74
April 2020 - June 2020 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			55.74
April 2020 - June 2020 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			182,000
Basis Differential			0.75
April 2020 - June 2020 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential			0.75
April 2020 - June 2020 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			182,000
Floors (in dollars per Mmbtu's/Bbl's)			0.61
April 2020 - June 2020 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.61
April 2020 - September 2020 \| Fixed Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU			640,000
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU			2.61
April 2020 - September 2020 \| Fixed Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU			2.61
April 2020 - December 2020 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			550,000
April 2020 - December 2020 \| Fixed Swap \| Crude oil \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			55.68
April 2020 - December 2020 \| Fixed Swap \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			60.00
April 2020 - December 2020 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			57.84
April 2020 - December 2020 \| Fixed Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU			2,200,000
April 2020 - December 2020 \| Fixed Swap \| Natural gas \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU			2.55
April 2020 - December 2020 \| Fixed Swap \| Natural gas \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU			2.57
April 2020 - December 2020 \| Fixed Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU			2.56
April 2020 - December 2020 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		275,000	1,375,000		275,000
Basis Differential		0.75			0.75
April 2020 - December 2020 \| Basis Swap \| Crude oil \| Minimum
Derivative and hedging activities
Basis Differential			0.67
April 2020 - December 2020 \| Basis Swap \| Crude oil \| Maximum
Derivative and hedging activities
Basis Differential			0.85
April 2020 - December 2020 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential		0.75	0.72		0.75
April 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			1,375,000
April 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.37
April 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.54
April 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.43
April 2020 - December 2020 \| Collars \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			412,500
Floors (in dollars per Mmbtu's/Bbl's)			50.00
Ceilings (in dollars per Mmbtu's/Bbl's)			70.00
April 2020 - December 2020 \| Collars \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			50.00
Ceilings (in dollars per Mmbtu's/Bbl's)			70.00
April 2020 - December 2020 \| Call option \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			1,760,000
Ceilings (in dollars per Mmbtu's/Bbl's)			70.00
April 2020 - December 2020 \| Call option \| Crude oil \| Weighted Average
Derivative and hedging activities
Ceilings (in dollars per Mmbtu's/Bbl's)			70.00
April 2020 - December 2020 \| Put options \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			687,500
Floors (in dollars per Mmbtu's/Bbl's)			55.00
April 2020 - December 2020 \| Put options \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			55.00
July 2020 - September 2020 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			92,000
Floors (in dollars per Mmbtu's/Bbl's)			58.20
July 2020 - September 2020 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			58.20
July 2020 - September 2020 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			92,000
Basis Differential			0.90
July 2020 - September 2020 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential			0.90
July 2020 - September 2020 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			92,000
Floors (in dollars per Mmbtu's/Bbl's)			0.63
July 2020 - September 2020 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.63
July 2020 - December 2020 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			184,000
Floors (in dollars per Mmbtu's/Bbl's)			32.60
July 2020 - December 2020 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			32.60
July 2020 - December 2020 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			368,000
July 2020 - December 2020 \| Basis Swap \| Crude oil \| Minimum
Derivative and hedging activities
Basis Differential			(2.20)
July 2020 - December 2020 \| Basis Swap \| Crude oil \| Maximum
Derivative and hedging activities
Basis Differential			0.95
July 2020 - December 2020 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential			(0.63)
July 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			368,000
July 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Minimum
Derivative and hedging activities
Floor (in dollars per Mmbtu's/Bbl's)			(1.10)
July 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.64
July 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floor (in dollars per Mmbtu's/Bbl's)			(0.23)
October 2020 - December 2020 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			92,000
Floors (in dollars per Mmbtu's/Bbl's)			56.80
October 2020 - December 2020 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			56.80
October 2020 - December 2020 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			92,000
Basis Differential			0.95
October 2020 - December 2020 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential			0.95
October 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			92,000
Floors (in dollars per Mmbtu's/Bbl's)			0.51
October 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.51
January 2021 - March 2021 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			180,000
January 2021 - March 2021 \| Fixed Swap \| Crude oil \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			55.55
January 2021 - March 2021 \| Fixed Swap \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			56.08
January 2021 - March 2021 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			55.82
January 2021 - March 2021 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			180,000
January 2021 - March 2021 \| Basis Swap \| Crude oil \| Minimum
Derivative and hedging activities
Basis Differential			1.00
January 2021 - March 2021 \| Basis Swap \| Crude oil \| Maximum
Derivative and hedging activities
Basis Differential			1.05
January 2021 - March 2021 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential			1.03
January 2021 - March 2021 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			180,000
January 2021 - March 2021 \| WTI NYMEX Roll \| Crude oil \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.42
January 2021 - March 2021 \| WTI NYMEX Roll \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.48
January 2021 - March 2021 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.45
January 2021 - June 2021 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			181,000
Floors (in dollars per Mmbtu's/Bbl's)			32.60
January 2021 - June 2021 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			32.60
January 2021 - June 2021 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			181,000
Basis Differential			(2.20)
January 2021 - June 2021 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential			(2.20)
January 2021 - June 2021 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			181,000
Floor (in dollars per Mmbtu's/Bbl's)			(1.10)
January 2021 - June 2021 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floor (in dollars per Mmbtu's/Bbl's)			(1.10)
April 2021 - June 2021 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			91,000
Floors (in dollars per Mmbtu's/Bbl's)			54.60
April 2021 - June 2021 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			54.60
April 2021 - June 2021 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			91,000
Basis Differential			1.05
April 2021 - June 2021 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential			1.05
April 2021 - June 2021 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl			91,000
Floors (in dollars per Mmbtu's/Bbl's)			0.32
April 2021 - June 2021 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)			0.32
January 2020 - June 2020 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		182,000			182,000
Floors (in dollars per Mmbtu's/Bbl's)		55.74			55.74
January 2020 - June 2020 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		55.74			55.74
January 2020 - September 2020 \| Fixed Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU		1,186,000			1,186,000
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU		2.61			2.61
January 2020 - September 2020 \| Fixed Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU		2.61			2.61
January 2020 - December 2020 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		732,000			732,000
January 2020 - December 2020 \| Fixed Swap \| Crude oil \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		55.68			55.68
January 2020 - December 2020 \| Fixed Swap \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		60.00			60.00
January 2020 - December 2020 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		57.84			57.84
January 2020 - December 2020 \| Fixed Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU		2,928,000			2,928,000
January 2020 - December 2020 \| Fixed Swap \| Natural gas \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU		2.55			2.55
January 2020 - December 2020 \| Fixed Swap \| Natural gas \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU		2.57			2.57
January 2020 - December 2020 \| Fixed Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU		2.56			2.56
January 2020 - December 2020 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		1,464,000			1,464,000
January 2020 - December 2020 \| Basis Swap \| Crude oil \| Minimum
Derivative and hedging activities
Basis Differential		0.67			0.67
January 2020 - December 2020 \| Basis Swap \| Crude oil \| Maximum
Derivative and hedging activities
Basis Differential		0.85			0.85
January 2020 - December 2020 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential		0.720			0.720
January 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		366,000			366,000
Floors (in dollars per Mmbtu's/Bbl's)		0.37			0.37
January 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		0.37			0.37
January 2020 - December 2020 \| Collars \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		549,000			549,000
Floors (in dollars per Mmbtu's/Bbl's)		50.00			50.00
Ceilings (in dollars per Mmbtu's/Bbl's)		70.00			70.00
January 2020 - December 2020 \| Collars \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		50.00			50.00
Ceilings (in dollars per Mmbtu's/Bbl's)		70.00			70.00
January 2020 - December 2020 \| Call option \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		2,342,400			2,342,400
Ceilings (in dollars per Mmbtu's/Bbl's)		70.00			70.00
January 2020 - December 2020 \| Call option \| Crude oil \| Weighted Average
Derivative and hedging activities
Ceilings (in dollars per Mmbtu's/Bbl's)		70.00			70.00
January 2020 - December 2020 \| Put options \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		915,000			915,000
Floors (in dollars per Mmbtu's/Bbl's)		55.00			55.00
January 2020 - December 2020 \| Put options \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		55.00			55.00
February 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		1,340,000			1,340,000
February 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		0.41			0.41
February 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		0.54			0.54
February 2020 - December 2020 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		0.44			0.44
January 2021 - December 2021 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		1,460,000	1,460,000		1,460,000
January 2021 - December 2021 \| Fixed Swap \| Crude oil \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		50.70	50.70		50.70
January 2021 - December 2021 \| Fixed Swap \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		52.80	52.80		52.80
January 2021 - December 2021 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		51.91	51.91		51.91
January 2021 - December 2021 \| Fixed Swap \| Natural gas
Derivative and hedging activities
Volume in Mmbtu's \| MMBTU		2,190,000	2,190,000		2,190,000
January 2021 - December 2021 \| Fixed Swap \| Natural gas \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU		2.47	2.47		2.47
January 2021 - December 2021 \| Fixed Swap \| Natural gas \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU		2.48	2.48		2.48
January 2021 - December 2021 \| Fixed Swap \| Natural gas \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's) \| $ / MMBTU		2.47	2.47		2.47
January 2021 - December 2021 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		1,460,000	1,460,000		1,460,000
January 2021 - December 2021 \| Basis Swap \| Crude oil \| Minimum
Derivative and hedging activities
Basis Differential		0.82	0.82		0.82
January 2021 - December 2021 \| Basis Swap \| Crude oil \| Maximum
Derivative and hedging activities
Basis Differential		0.95	0.95		0.95
January 2021 - December 2021 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential		0.85	0.85		0.85
January 2021 - December 2021 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		1,460,000	1,460,000		1,460,000
January 2021 - December 2021 \| WTI NYMEX Roll \| Crude oil \| Minimum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		0.13	0.13		0.13
January 2021 - December 2021 \| WTI NYMEX Roll \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		0.14	0.14		0.14
January 2021 - December 2021 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		0.14	0.14		0.14
January 2022 - December 2022 \| Fixed Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		1,460,000	1,460,000		1,460,000
Floors (in dollars per Mmbtu's/Bbl's)		51.50	51.50		51.50
January 2022 - December 2022 \| Fixed Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		51.50	51.50		51.50
January 2022 - December 2022 \| Basis Swap \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		1,460,000	1,460,000		1,460,000
January 2022 - December 2022 \| Basis Swap \| Crude oil \| Minimum
Derivative and hedging activities
Basis Differential		0.85	0.85		0.85
January 2022 - December 2022 \| Basis Swap \| Crude oil \| Maximum
Derivative and hedging activities
Basis Differential		0.95	0.95		0.95
January 2022 - December 2022 \| Basis Swap \| Crude oil \| Weighted Average
Derivative and hedging activities
Basis Differential		0.88	0.88		0.88
January 2022 - December 2022 \| WTI NYMEX Roll \| Crude oil
Derivative and hedging activities
Volume in Bbl's \| bbl		2,555,000	1,460,000		2,555,000
January 2022 - December 2022 \| WTI NYMEX Roll \| Crude oil \| Minimum
Derivative and hedging activities
Floor (in dollars per Mmbtu's/Bbl's)		(0.02)			(0.02)
January 2022 - December 2022 \| WTI NYMEX Roll \| Crude oil \| Maximum
Derivative and hedging activities
Floors (in dollars per Mmbtu's/Bbl's)		0.00			0.00
January 2022 - December 2022 \| WTI NYMEX Roll \| Crude oil \| Weighted Average
Derivative and hedging activities
Floor (in dollars per Mmbtu's/Bbl's)		(0.01)			(0.01)