Derivative Financial Instruments - Schedule of Open Crude Oil and Natural Gas Derivative Contracts (Details)		6 Months Ended
	Jul. 09, 2018 $ / bbl bbl	Jun. 30, 2018 MMBTU $ / MMBTU $ / bbl bbl
Q3 - Q4 2018 | Natural Gas
Derivative [Line Items]
Natural gas volume | MMBTU		1,220,000
Weighted Average Price ($/Bbl / $/MMBtu) | $ / MMBTU		2.95
Q3 - Q4 2018 | Crude Oil
Derivative [Line Items]
Crude oil volume | bbl		873,400
Weighted Average Price ($/Bbl / $/MMBtu)		54.31
Q1 - Q4 2019 | Crude Oil
Derivative [Line Items]
Crude oil volume | bbl		1,259,100
Weighted Average Price ($/Bbl / $/MMBtu)		57.15
Q3 - Q4 2018 | Crude Oil
Derivative [Line Items]
Crude oil volume | bbl		303,600
Q1 - Q4 2019 | Crude Oil
Derivative [Line Items]
Crude oil volume | bbl		365,000
Q1 - Q4 2020 | Crude Oil
Derivative [Line Items]
Crude oil volume | bbl		366,000
Q3 - Q4 2018 | Crude Oil
Derivative [Line Items]
Crude oil volume | bbl		184,000
Short | Q3 - Q4 2018 | Crude Oil
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu)		(0.15)
Short | Q1 - Q4 2019 | Crude Oil
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu)		(5.95)
Short | Q1 - Q4 2020 | Crude Oil
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu)		(5.95)
Long | Q1 - Q4 2019 | Crude Oil
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu)		4.50
Long | Q3 - Q4 2018 | Crude Oil
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu)		6.35
Subsequent Event | Basis Swap | Crude Oil
Derivative [Line Items]
Crude oil volume | bbl	547,500
Subsequent Event | Short | Basis Swap | Crude Oil
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu)	(7.75)