Derivative Financial Instruments - Schedule of Outstanding Derivative Contracts (Details)	12 Months Ended
	Dec. 31, 2018 MMBTU $ / MMBTU $ / bbl bbl
Derivative Swap Contractual Period One | Natural Gas (MMcf)
Derivative [Line Items]
Natural gas volume (MMBtu) | MMBTU	3,832,500
Weighted Average Price ($/Bbl / $/MMBtu) | $ / MMBTU	2.86
Derivative Swap Contractual Period One | Crude Oil
Derivative [Line Items]
Crude oil volume (Bbl) | bbl	3,022,100
Weighted Average Price ($/Bbl / $/MMBtu) | $ / bbl	63.09
Derivative Swap Contractual Period Two | Natural Gas (MMcf)
Derivative [Line Items]
Natural gas volume (MMBtu) | MMBTU	2,562,000
Weighted Average Price ($/Bbl / $/MMBtu) | $ / MMBTU	2.85
Derivative Swap Contractual Period Two | Crude Oil
Derivative [Line Items]
Crude oil volume (Bbl) | bbl	1,464,000
Weighted Average Price ($/Bbl / $/MMBtu) | $ / bbl	65.87
Crude Oil Derivative Basis Swap Contractual Period One | Crude Oil
Derivative [Line Items]
Crude oil volume (Bbl) | bbl	365,000
Weighted Average Price ($/Bbl / $/MMBtu) | $ / bbl	4.50
Crude Oil Derivative Basis Swap Contractual Period Two | Crude Oil
Derivative [Line Items]
Crude oil volume (Bbl) | bbl	2,675,500
Crude Oil Derivative Basis Swap Contractual Period Three | Crude Oil
Derivative [Line Items]
Crude oil volume (Bbl) | bbl	1,464,000
Natural Gas Derivative Basis Swap Contractual Period One | Natural Gas (MMcf)
Derivative [Line Items]
Natural gas volume (MMBtu) | MMBTU	3,832,500
Natural Gas Derivative Basis Swap Contractual Period Two | Natural Gas (MMcf)
Derivative [Line Items]
Natural gas volume (MMBtu) | MMBTU	2,562,000
Short | Crude Oil Derivative Basis Swap Contractual Period Two | Crude Oil
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu) | $ / bbl	5.81
Short | Crude Oil Derivative Basis Swap Contractual Period Three | Crude Oil
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu) | $ / bbl	2.74
Short | Natural Gas Derivative Basis Swap Contractual Period One | Natural Gas (MMcf)
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu) | $ / MMBTU	1.14
Short | Natural Gas Derivative Basis Swap Contractual Period Two | Natural Gas (MMcf)
Derivative [Line Items]
Weighted Average Price ($/Bbl / $/MMBtu) | $ / MMBTU	1.07