Summary of Property and Equipment (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) $ / bbl	Dec. 31, 2016 USD ($)	Mar. 31, 2016 $ / bbl
Property, Plant and Equipment [Line Items]
Unproved Oil and Gas Property excluded	$ 3,500	$ 4,700
Proved Oil and Gas Property, Full Cost Method	272,947	251,083
Unproved Oil and Gas Property, Full Cost Method	3,468	4,719
Oil and Gas Property, Full Cost Method, Gross	276,415	255,802
Other property and equipment	3,575	3,575
Total properties and equipment	279,990	259,377
Accumulated depreciation, depletion and amortization	(21,664)	(11,904)
Property and equipment, net (successful efforts method)	258,326	$ 247,473
Undeveloped Leasehold Costs Transferred	1,900
Capitalized Costs, Proved Properties	600
Interest Costs Capitalized	$ 100
Successor [Member]
Property, Plant and Equipment [Line Items]
Amortization Expense Per Physical Unit of Production | $ / bbl	11.47
Predecessor [Member]
Property, Plant and Equipment [Line Items]
Amortization Expense Per Physical Unit of Production | $ / bbl			9.905451656000