The capitalized costs incurred (excluded from amortization), as of the date of the balance sheet, in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells and extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery.

No definition available.

OIL AND NATURAL GAS PROPERTIES (Details) $ in Thousands	1 Months Ended		4 Months Ended	6 Months Ended	8 Months Ended	12 Months Ended
OIL AND NATURAL GAS PROPERTIES (Details) $ in Thousands	Sep. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Sep. 09, 2016 USD ($)	Dec. 31, 2018 USD ($) $ / MMBTU $ / bbl	Dec. 31, 2017 USD ($) $ / MMBTU $ / bbl	Dec. 31, 2016 $ / MMBTU $ / bbl
Oil and Natural Gas Properties
Subject to depletion					$ 1,214,129	$ 1,470,509	$ 877,316
Not subject to depletion:
Exploration and extension wells in progress						23,536	5,298
Other capital costs:
Incurred in 2018						310,113
Incurred in 2017						638,269	760,488
Gross oil and natural gas properties					1,546,244	2,442,427	1,643,102
Less - accumulated depletion						(639,951)	(570,155)
Net oil and natural gas properties					1,546,244	$ 1,802,476	$ 1,072,947
Ceiling Limitation Disclosures
Full cost ceiling impairment	$ 420,900		$ 420,934
Full cost ceiling impairment, after tax	$ 268,100
Predecessor
Oil and Natural Gas Properties
Subject to depletion					7,712,003
Other capital costs:
Gross oil and natural gas properties					8,905,262
Less - accumulated depletion					(6,803,231)
Net oil and natural gas properties					2,102,031
Ceiling Limitation Disclosures
First day average of the (WTI) crude oil spot price (in dollars per barrel) \| $ / bbl						65.56	51.34	42.75
First day average of the Henry Hub natural gas price (in dollars per Mmbtu) \| $ / MMBTU						3.100	2.976	2.481
Full cost ceiling impairment				$ 754,800	754,769
Full cost ceiling impairment, after tax				$ 478,200
Predecessor \| Unevaluated Oil and Gas Leaseholds
Other capital costs:
Interest costs capitalized					$ 68,200
Predecessor \| Tuscaloosa Marine Shale
Other capital costs:
Amount of unevaluated property costs transferred to the full cost pool		$ 74,800
Utica areas \| Predecessor \| Unevaluated Oil and Gas Leaseholds
Other capital costs:
Amount of unevaluated property costs transferred to the full cost pool		$ 330,400