INVESTMENT IN OIL AND GAS PROPERTIES - Additional Information (Details) $ in Thousands		1 Months Ended	2 Months Ended	3 Months Ended			4 Months Ended	6 Months Ended
	Mar. 31, 2016 USD ($) $ / Mcf $ / bbl	Mar. 31, 2017 USD ($) $ / Mcf $ / bbl	Feb. 28, 2017 USD ($) $ / Mcf $ / bbl	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($) $ / Mcf $ / bbl	Mar. 31, 2016 USD ($) $ / Mcf $ / bbl	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($) $ / Mcf $ / bbl
Oil and Gas In Process Activities [Line Items]
Proved reserves			$ 380,800
Probable and possible reserves			16,800
Unevaluated properties reserves			$ 80,200
Write-down of oil and gas properties				$ 0			$ 256,435
Oil
Oil and Gas In Process Activities [Line Items]
Average 12-month oil prices net of differentials (in dollars per Bbl) | $ / bbl		45.40	56.01
Natural Gas
Oil and Gas In Process Activities [Line Items]
Average twelve month gas prices net of differentials (in dollars per Mcf) | $ / Mcf		2.24	2.52
Natural Gas Liquids (MBbls)
Oil and Gas In Process Activities [Line Items]
Average 12-month gas prices net of differentials (in dollars per Bbl) | $ / bbl		19.18	14.18
Oil And Gas
Oil and Gas In Process Activities [Line Items]
Write-down of oil and gas properties		$ 256,400
Predecessor
Oil and Gas In Process Activities [Line Items]
Write-down of oil and gas properties			$ 0		$ 118,649			$ 247,853
Decrease in written down value of oil and gas properties					$ (18,100)	$ (23,000)
Predecessor | CANADA
Oil and Gas In Process Activities [Line Items]
Write-down of oil and gas properties	$ 300
Predecessor | Oil
Oil and Gas In Process Activities [Line Items]
Average 12-month oil prices net of differentials (in dollars per Bbl) | $ / bbl	46.72				43.49	46.72		43.49
Predecessor | Natural Gas
Oil and Gas In Process Activities [Line Items]
Average twelve month gas prices net of differentials (in dollars per Mcf) | $ / Mcf	2.01				1.93	2.01		1.93
Predecessor | Natural Gas Liquids (MBbls)
Oil and Gas In Process Activities [Line Items]
Average 12-month gas prices net of differentials (in dollars per Bbl) | $ / bbl	13.65				9.33	13.65		9.33
Predecessor | Oil And Gas
Oil and Gas In Process Activities [Line Items]
Write-down of oil and gas properties	$ 128,900							$ 118,600