Supplemental Oil & Natural Gas Data (Unaudited) Reserve Quantities (Details) bbl in Thousands, Mcf in Thousands		12 Months Ended
	Dec. 31, 2013 MBoe bbl Mcf	Dec. 31, 2015 MBoe Wells bbl Mcf	Dec. 31, 2014 MBoe Wells bbl Mcf	Dec. 16, 2013 MBoe Wells bbl Mcf	Dec. 31, 2015 MBoe bbl Mcf	Dec. 31, 2014 MBoe bbl Mcf	Dec. 31, 2013 MBoe bbl Mcf	Dec. 16, 2013 MBoe bbl Mcf
Successor
Total proved reserves:
Beginning of year | MBoe	234,715	278,908	234,048
Revisions of previous estimates | MBoe	0	(87,365)	(3,561)
Extensions, discoveries and other additions | MBoe	0	1,610	26,360
Purchases of minerals in place | MBoe		0	90,676
Sales of minerals in place | MBoe	0	0	(49,727)
Production | MBoe	(667)	(17,666)	(18,888)
End of year | MBoe	234,048	175,487	278,908	234,715
Proved developed reserves | MBoe					175,487	211,069	155,494
Proved undeveloped reserves | MBoe					0	67,839	78,554
Total proved reserves | MBoe	234,048	278,908	234,048	234,715	175,487	278,908	234,048	234,715
Proved Developed and Undeveloped Reserve, Net (Energy), Period Increase (Decrease) | MBoe	(667)	(103,421)	44,860
Change in proved reserves due to commodity prices | MBoe		(71,389)	2,896
Change in proved reserves due to the uncertainty of future capital commitments | MBoe		(15,067)
Change in proved reserves due to the SEC five-year development limitation on puds | MBoe		(10,733)	(2,910)
Change in proved reserves due to asset performance | MBoe		9,824	(3,547)
Wells Drilled Gross Productive | Wells		196	411
Successor | Oil
Total proved reserves:
Beginning of year	171,399	144,410	170,903
Revisions of previous estimates	0	(40,348)	(9,256)
Extensions, discoveries and other additions	0	793	20,056
Purchases of minerals in place		0	4,991
Sales of minerals in place	0	0	(28,890)
Production	(496)	(10,963)	(13,394)
End of year	170,903	93,892	144,410	171,399
Proved developed reserves					93,892	104,337	113,717
Proved undeveloped reserves					0	40,073	57,186
Total proved reserves	170,903	144,410	170,903	171,399	93,892	144,410	170,903	171,399
Successor | Natural Gas Liquids [Member]
Total proved reserves:
Beginning of year	16,493	19,992	16,459
Revisions of previous estimates	0	(2,012)	(1,391)
Extensions, discoveries and other additions	0	34	379
Purchases of minerals in place		0	17,542
Sales of minerals in place	0	0	(12,326)
Production	(34)	(1,061)	(671)
End of year	16,459	16,953	19,992	16,493
Proved developed reserves					16,953	14,702	7,977
Proved undeveloped reserves					0	5,290	8,482
Total proved reserves	16,459	19,992	16,459	16,493	16,953	19,992	16,459	16,493
Successor | Natural gas
Total proved reserves:
Beginning of year | Mcf	280,943	687,037	280,117
Revisions of previous estimates | Mcf	0	(270,030)	42,514
Extensions, discoveries and other additions | Mcf	0	4,693	35,552
Purchases of minerals in place | Mcf		0	408,857
Sales of minerals in place | Mcf	0	0	(51,065)
Production | Mcf	(826)	(33,852)	(28,938)
End of year | Mcf	280,117	387,848	687,037	280,943
Proved developed reserves | Mcf					387,848	552,184	202,798
Proved undeveloped reserves | Mcf					0	134,853	77,319
Total proved reserves | Mcf	280,117	687,037	280,117	280,943	387,848	687,037	280,117	280,943
Predecessor
Total proved reserves:
Beginning of year | MBoe	234,715			275,129
Revisions of previous estimates | MBoe				(39,092)
Extensions, discoveries and other additions | MBoe				15,913
Sales of minerals in place | MBoe				(2,775)
Production | MBoe				(14,460)
End of year | MBoe				234,715
Proved developed reserves | MBoe								156,161
Proved undeveloped reserves | MBoe								78,554
Total proved reserves | MBoe	234,715			275,129				234,715
Proved Developed and Undeveloped Reserve, Net (Energy), Period Increase (Decrease) | MBoe				(40,414)
Wells Drilled Gross Productive | Wells				340
Predecessor | Oil
Total proved reserves:
Beginning of year	171,399			184,468
Revisions of previous estimates				(10,301)
Extensions, discoveries and other additions				9,360
Sales of minerals in place				(1,416)
Production				(10,712)
End of year				171,399
Proved developed reserves								114,213
Proved undeveloped reserves								57,186
Total proved reserves	171,399			184,468				171,399
Predecessor | Natural Gas Liquids [Member]
Total proved reserves:
Beginning of year	16,493			19,740
Revisions of previous estimates				(3,235)
Extensions, discoveries and other additions				1,595
Sales of minerals in place				(847)
Production				(760)
End of year				16,493
Proved developed reserves								8,011
Proved undeveloped reserves								8,482
Total proved reserves	16,493			19,740				16,493
Predecessor | Natural gas
Total proved reserves:
Beginning of year | Mcf	280,943			425,519
Revisions of previous estimates | Mcf				(153,330)
Extensions, discoveries and other additions | Mcf				29,756
Sales of minerals in place | Mcf				(3,071)
Production | Mcf				(17,931)
End of year | Mcf				280,943
Proved developed reserves | Mcf								203,624
Proved undeveloped reserves | Mcf								77,319
Total proved reserves | Mcf	280,943			425,519				280,943