Derivative Instruments - Schedule of Outstanding Commodity Derivative Instruments (Details) MMBTU in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($) MBbls MMBTU $ / bbl
Oil [Member]
Derivative [Line Items]
Fair value asset (liability) | $	$ (15,727)
Oil [Member] | 2016 Swaps [Member]
Derivative [Line Items]
Total notional amount of oil (in MBbls) | MBbls	2,973
Average swap price (in dollars per barrel)	49.18
Fair value asset (liability) | $	$ 4,765
Oil [Member] | 2017 Swaps [Member]
Derivative [Line Items]
Total notional amount of oil (in MBbls) | MBbls	5,059
Average swap price (in dollars per barrel)	48.04
Fair value asset (liability) | $	$ (14,742)
Oil [Member] | 2017 Two Way Collars [Member]
Derivative [Line Items]
Total notional amount of oil (in MBbls) | MBbls	1,002
Average floor price (in dollars per barrel)	41.67
Average ceiling price (in dollars per barrel)	50.58
Fair value asset (liability) | $	$ (4,092)
Oil [Member] | 2017 Three Way Collars [Member]
Derivative [Line Items]
Total notional amount of oil (in MBbls) | MBbls	1,670
Average sub-floor price (in dollars per barrel)	30.00
Average floor price (in dollars per barrel)	45.00
Average ceiling price (in dollars per barrel)	60.11
Fair value asset (liability) | $	$ 241
Oil [Member] | 2018 Swaps [Member]
Derivative [Line Items]
Total notional amount of oil (in MBbls) | MBbls	522
Average swap price (in dollars per barrel)	50.07
Fair value asset (liability) | $	$ (1,349)
Oil [Member] | 2018 Two Way Collars [Member]
Derivative [Line Items]
Total notional amount of oil (in MBbls) | MBbls	93
Average floor price (in dollars per barrel)	41.67
Average ceiling price (in dollars per barrel)	50.58
Fair value asset (liability) | $	$ (471)
Oil [Member] | 2018 Three Way Collars [Member]
Derivative [Line Items]
Total notional amount of oil (in MBbls) | MBbls	155
Average sub-floor price (in dollars per barrel)	30.00
Average floor price (in dollars per barrel)	45.00
Average ceiling price (in dollars per barrel)	60.11
Fair value asset (liability) | $	$ (122)
Natural Gas [Member] | 2017 Swaps [Member]
Derivative [Line Items]
Total notional amount of natural gas (in Btu) | MMBTU	1,336
Average swap price (in dollars per barrel)	3.12
Fair value asset (liability) | $	$ 52
Natural Gas [Member] | 2018 Swaps [Member]
Derivative [Line Items]
Total notional amount of natural gas (in Btu) | MMBTU	124
Average swap price (in dollars per barrel)	3.12
Fair value asset (liability) | $	$ (9)