Derivatives (Non Hedges Commodity) (Details) - Not Designated as Hedging Instrument [Member]	12 Months Ended
	Dec. 31, 2019 USD ($) MMBTU_per_day Bbls_per_day $ / MMBTU $ / bbl	Jun. 30, 2019 Bbls_per_day
Three-Way Collars - Crude Oil 2020 Q1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	60,000
Three-Way Collars - Crude Oil 2020 Q2 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	60,000
Three-Way Collars - Crude Oil 2020 Q3 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	60,000
Three-Way Collars - Crude Oil 2020 Q4 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	60,000
Three-Way Collars - Crude Oil 2021 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Three-Way Collars - Crude Oil 2020 Q1, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	66.04
Three-Way Collars - Crude Oil 2020 Q2, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	66.04
Three-Way Collars - Crude Oil 2020 Q3, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	63.74
Three-Way Collars - Crude Oil 2020 Q4, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	63.74
Three-Way Collars - Crude Oil 2021, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	0
Three-Way Collars - Crude Oil 2020 Q1, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	55.00
Three-Way Collars - Crude Oil 2020 Q2, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	55.00
Three-Way Collars - Crude Oil 2020 Q3, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	55.00
Three-Way Collars - Crude Oil 2020 Q4, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	55.00
Three-Way Collars - Crude Oil 2021, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	0
Three-Way Collars - Crude Oil 2020 Q1, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	47.67
Three-Way Collars - Crude Oil 2020 Q2, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	47.67
Three-Way Collars - Crude Oil 2020 Q3, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	48.00
Three-Way Collars - Crude Oil 2020 Q4, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	48.00
Three-Way Collars - Crude Oil 2021, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / bbl	0
Midland Basis Swaps - Crude Oil 2020 Q1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	15,000
Weighted Average Commodity Price | $	$ (0.94)
Midland Basis Swaps - Crude Oil 2020 Q2 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	15,000
Weighted Average Commodity Price | $	$ (0.94)
Midland Basis Swaps - Crude Oil 2020 Q3 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	15,000
Weighted Average Commodity Price | $	$ (0.94)
Midland Basis Swaps - Crude Oil 2020 Q4 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	15,000
Weighted Average Commodity Price | $	$ (0.94)
Midland Basis Swaps - Crude Oil 2021 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	0
Weighted Average Commodity Price | $	$ 0
Brent Basis Swaps - Crude Oil 2020 Q1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	5,000
Weighted Average Commodity Price | $	$ (7.24)
Brent Basis Swaps - Crude Oil 2020 Q2 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	5,000
Weighted Average Commodity Price | $	$ (7.24)
Brent Basis Swaps - Crude Oil 2020 Q3 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	5,000
Weighted Average Commodity Price | $	$ (7.24)
Brent Basis Swaps - Crude Oil 2020 Q4 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	5,000
Weighted Average Commodity Price | $	$ (7.24)
Brent Basis Swaps - Crude Oil 2021 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	808
Weighted Average Commodity Price | $	$ (7.24)
Three-Way Collars - Natural Gas 2020 Q1 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day	100,000
Three-Way Collars - Natural Gas 2020 Q2 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day	0
Three-Way Collars - Natural Gas 2020 Q3 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day	0
Three-Way Collars - Natural Gas 2020 Q4 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day	0
Three-Way Collars - Natural Gas 2021 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day	0
Three-Way Collars - Natural Gas 2020 Q1, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	3.32
Three-Way Collars - Natural Gas 2020 Q2, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2020 Q3, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2020 Q4, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2021, Ceiling [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2020 Q1, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	2.75
Three-Way Collars - Natural Gas 2020 Q2, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2020 Q3, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2020 Q4, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2021, Floor [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2020 Q1, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	2.25
Three-Way Collars - Natural Gas 2020 Q2, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2020 Q3, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2020 Q4, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0
Three-Way Collars - Natural Gas 2021, Sold Put [Member]
Derivative [Line Items]
Weighted average price | $ / MMBTU	0