Supplemental Oil & Natural Gas Data (Unaudited) Costs incurred (Details) - USD ($) $ in Thousands			12 Months Ended
		Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 16, 2013
Successor
Property acquisition costs:
Proved		$ 0	$ 0	$ 478,311
Unproved		0	0	0
Exploration costs		0	0	148
Development costs		22,266	130,276	555,629
Asset retirement costs		0	2,151	6,064
Total costs incurred (1)	[1]	22,266	132,427	1,040,152
Capitalized interest		$ 41	2,000	6,000
Oil and natural gas:
Proved properties			4,231,836	4,025,595
Unproved properties			779,225	846,464
Total Oil and natural gas properties			5,011,061	4,872,059
Less accumulated depletion and amortization			(1,596,165)	(525,007)
Total oil and natural gas properties, net			$ 3,414,896	$ 4,347,052
Predecessor
Property acquisition costs:
Proved					$ 3,457
Unproved					463
Exploration costs					868
Development costs					577,568
Asset retirement costs					15,998
Total costs incurred (1)	[1]				598,354
Capitalized interest					$ 6,000

[1] The total above does not reflect approximately $2 million, $6 million, $41,000 and $6 million of capitalized interest incurred for the years ended December 31, 2015, and December 31, 2014, and for the periods from December 17, 2013 through December 31, 2013, and January 1, 2013 through December 16, 2013, respectively.