Supplemental Information About Oil & Natural Gas Producing Activities (Unaudited) - Standardized Measure of Discounted Cash Flow (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Oct. 10, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Successor
Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Net Cash Flows [Abstract]
Future cash inflows	$ 2,105,585
Future development costs	(482,162)
Future production costs	(640,306)
Future income tax expenses	(136,587)
Future net cash flows	846,530
10% discount to reflect timing of cash flows	(471,438)
Standardized measure of discounted future net cash flows	$ 375,092	$ 209,713
Predecessor
Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Net Cash Flows [Abstract]
Future cash inflows		1,217,641	$ 1,079,962	$ 1,850,205
Future development costs		(297,559)	(277,837)	(440,366)
Future production costs		(413,410)	(450,058)	(457,236)
Future income tax expenses		(5,614)	(6,643)	(10,834)
Future net cash flows		501,058	345,424	941,769
10% discount to reflect timing of cash flows		(291,345)	(210,355)	(575,886)
Standardized measure of discounted future net cash flows		$ 209,713	$ 135,069	$ 365,883	$ 371,307