Derivative Contracts Schedule of Commodity Derivative Contracts (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) bbl $ / bbl
Oil Swaps [Member] | Year 2020 [Member] | NYMEX WTI [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	14,100,000
Underlying, Derivative Asset | $ / bbl	57.83
Oil Swaps [Member] | Year 2020 [Member] | NYMEX WTI less Argus WTI Midland [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	1,500,000
Underlying, Derivative Asset | $ / bbl	57.30
Oil Swaps [Member] | Year 2020 [Member] | NYMEX WTI less Argus WTI Houston [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	1,000,000.0
Underlying, Derivative Asset | $ / bbl	60.06
Oil Swaps [Member] | Year 2021 [Member] | NYMEX WTI [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	900,000
Underlying, Derivative Asset | $ / bbl	55.06
Oil Basis Swaps [Member] | Year 2020 [Member] | NYMEX WTI less Argus WTI Midland [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	6,800,000
Derivatives, Weighted Average Differential | $	$ 0.18
Oil Basis Swaps [Member] | Year 2020 [Member] | NYMEX WTI less Argus WTI Houston [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	400,000
Derivatives, Weighted Average Differential | $	$ 3.75
Oil Basis Swaps [Member] | Year 2021 [Member] | NYMEX WTI less Argus WTI Midland [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	3,700,000
Derivatives, Weighted Average Differential | $	$ 0.98