DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details)	Mar. 09, 2018 counterparty	Dec. 31, 2017 contract	Dec. 31, 2016 instalment	Dec. 31, 2016 hedging_instrument	Dec. 31, 2016 contract
Derivative Instruments, Gain (Loss) [Line Items]
Maximum correlation between price of oil & natural gas in market and underlying price basis indicative in the derivative contract		100.00%
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivative instruments outstanding		0
Subsequent Event
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of counterparty contract volume	64.00%
Fixed-Price Swaps And Costless Collars | Subsequent Event
Derivative Instruments, Gain (Loss) [Line Items]
Number of counterparties | counterparty	4
Predecessor
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivative instruments outstanding					0
Predecessor | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivative instruments outstanding			0	0