Supplemental Information About Oil & Natural Gas Producing Activities (Unaudited) - Summary of Changes in Estimated Proved Reserves (Details) MMcf in Thousands, MBbls in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016 MMcf MBbls	Oct. 10, 2016 MMcf MBbls	Dec. 31, 2015 MMcf MBbls	Dec. 31, 2014 MMcf MBbls	Dec. 31, 2013 MMcf MBbls
Successor | Crude Oil (MBbls)
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of period	30,091
Extensions and discoveries	7,063
Revisions of previous estimates	184
Purchases of reserves in place	9,651
Divestitures of reserves in place	0
Production	(523)
End of period	46,466	30,091
Proved developed reserves:	14,551	11,346
Proved undeveloped reserves:	31,914	18,745
Successor | Natural Gas (MMcf)
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of period | MMcf	36,801
Extensions and discoveries | MMcf	12,219
Revisions of previous estimates | MMcf	16,445
Purchases of reserves in place | MMcf	83,992
Divestitures of reserves in place | MMcf	0
Production | MMcf	(1,113)
End of period | MMcf	148,344	36,801
Proved developed reserves: | MMcf	42,190	14,973
Proved undeveloped reserves: | MMcf	106,154	21,828
Successor | Natural Gas Liquids (MBbls)
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of period	4,506
Extensions and discoveries	1,225
Revisions of previous estimates	983
Purchases of reserves in place	5,152
Divestitures of reserves in place	0
Production	(96)
End of period	11,770	4,506
Proved developed reserves:	3,618	1,927
Proved undeveloped reserves:	8,152	2,579
Predecessor | Crude Oil (MBbls)
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of period	30,091	23,199	19,850	18,510
Extensions and discoveries		5,851	9,444	16,122
Revisions of previous estimates		1,025	(5,109)	56
Purchases of reserves in place		1,600	844	162
Divestitures of reserves in place		0	0	(13,572)
Production		(1,584)	(1,830)	(1,428)
End of period		30,091	23,199	19,850
Proved developed reserves:		11,346	9,347	8,026	6,021
Proved undeveloped reserves:		18,745	13,852	11,823	12,489
Predecessor | Natural Gas (MMcf)
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of period | MMcf	36,801	32,442	27,414	6,968
Extensions and discoveries | MMcf		6,410	11,927	22,575
Revisions of previous estimates | MMcf		(1,521)	(5,204)	178
Purchases of reserves in place | MMcf		2,130	1,363	192
Divestitures of reserves in place | MMcf		0	0	(387)
Production | MMcf		(2,660)	(3,058)	(2,112)
End of period | MMcf		36,801	32,442	27,414
Proved developed reserves: | MMcf		14,973	12,711	11,959	4,837
Proved undeveloped reserves: | MMcf		21,828	19,731	15,455	2,131
Predecessor | Natural Gas Liquids (MBbls)
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of period	4,506	3,851	1,551	525
Extensions and discoveries		773	1,432	1,127
Revisions of previous estimates		(110)	995	180
Purchases of reserves in place		245	204	23
Divestitures of reserves in place		0	0	(69)
Production		(253)	(331)	(235)
End of period		4,506	3,851	1,551
Proved developed reserves:		1,927	1,603	766	382
Proved undeveloped reserves:		2,579	2,248	785	143