DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) - Revolving Facility	3 Months Ended
	Mar. 31, 2020
Projected Period Thirty Six Months
Derivative
Hedging period of proved reserves classified as Developed Producing Reserves	36 months
Projected Period Thirty Seven to Sixty Months
Derivative
Hedging period of proved reserves classified as Developed Producing Reserves	24 months
Maximum | Projected Period Thirty Six Months
Derivative
Hedging percentage of reasonably projected oil and gas production	85.00%
Maximum | Projected Period Thirty Seven to Sixty Months
Derivative
Hedging percentage of reasonably projected oil and gas production	75.00%
Hedging period of proved reserves classified as Developed Producing Reserves	60 months
Minimum | Projected Period Thirty Six Months
Derivative
Hedging percentage of reasonably projected oil and gas production	50.00%
Minimum | Projected Period Thirty Seven to Sixty Months
Derivative
Hedging period of proved reserves classified as Developed Producing Reserves	25 months