RISK MANAGEMENT (Commodity Contracts) (Details)	1 Months Ended	9 Months Ended
	Nov. 30, 2019 USD ($) MMBTU $ / MMBTU	Sep. 30, 2019 USD ($) MMBTU $ / MMBTU $ / bbl bbl
Derivative Instruments Related to Oil and Gas Production [Line Items]
Derivative, net cash settlement | $		$ 7,900,000
Subsequent Event
Derivative Instruments Related to Oil and Gas Production [Line Items]
Derivative, net cash settlement | $	$ 150,000
Oil | Swaps - October 2019 to December 2019
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (Bbls)		121,900
Weighted average fixed price | $ / bbl		63.53
Oil | Swaps - January 2020 to December 2020
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (Bbls)		439,200
Weighted average fixed price | $ / bbl		60.50
Derivative unwound volume (Bbls)		228,750
Oil | Swaps - September through December 2019
Derivative Instruments Related to Oil and Gas Production [Line Items]
Derivative unwound volume (Bbls)		85,400
Natural Gas | Swaps - October 2019 to December 2019
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (MMBtus) | MMBTU		3,450,000
Weighted average fixed price | $ / MMBTU		2.78
Derivative unwound volume (MMBtus) | MMBTU		2,990,000
Natural Gas | Swaps - January 2020 to December 2020
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (MMBtus) | MMBTU		12,810,000
Weighted average fixed price | $ / MMBTU		2.68
Derivative unwound volume (MMBtus) | MMBTU		10,980,000
Natural Gas | Swaps - January 2020 to December 2020 | Subsequent Event
Derivative Instruments Related to Oil and Gas Production [Line Items]
Weighted average fixed price | $ / MMBTU	2.64
Derivative unwound volume (MMBtus) | MMBTU	1,464,000
Natural Gas | December 2019 | Subsequent Event
Derivative Instruments Related to Oil and Gas Production [Line Items]
Weighted average fixed price | $ / MMBTU	2.78
Derivative unwound volume (MMBtus) | MMBTU	124,000
Natural Gas Liquids | Swaps - October 2019 to December 2019
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (Bbls)		30,360
Weighted average fixed price | $ / bbl		22.50
Natural Gas Liquids | Swaps - January 2020 to December 2020
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (Bbls)		111,630
Weighted average fixed price | $ / bbl		20.71
Derivative unwound volume (Bbls)		656,970
Natural Gas Liquids | Swaps - September through December 2019
Derivative Instruments Related to Oil and Gas Production [Line Items]
Derivative unwound volume (Bbls)		283,040