RISK MANAGEMENT (Commodity Contracts) (Details)	Jun. 30, 2019 MMBTU $ / MMBTU $ / bbl bbl
Oil | Swaps - July 2019 to December 2019
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (Bbls) | bbl	372,600
Weighted average fixed price | $ / bbl	63.37
Oil | Swaps - January 2020 to December 2020
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (Bbls) | bbl	667,950
Weighted average fixed price | $ / bbl	60.51
Natural Gas | Swaps - July 2019 to December 2019
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (MMBtus) | MMBTU	12,880,000
Weighted average fixed price | $ / MMBTU	2.77
Natural Gas | Swaps - January 2020 to December 2020
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (MMBtus) | MMBTU	23,790,000
Weighted average fixed price | $ / MMBTU	2.71
Natural Gas Liquids | Swaps - July 2019 to December 2019
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (Bbls) | bbl	487,600
Weighted average fixed price | $ / bbl	18.73
Natural Gas Liquids | Swaps - January 2020 to December 2020
Derivative Instruments Related to Oil and Gas Production [Line Items]
Hedged Volume (Bbls) | bbl	768,600
Weighted average fixed price | $ / bbl	17.68