Derivatives Derivatives (Details 4-Non Hedges Commodity) (Details)	Aug. 03, 2017 Bbls_per_day $ / bbl	Jun. 30, 2017 MMBTU MMBTU_per_day BBL / Days Bbls_per_day $ / MMBTU $ / bbl
Crude Oil Three-Way Collars For Third Quarter of Year 1 [Member]
Derivative [Line Items]
Volume | BBL / Days		50,000
Ceiling Price | $ / bbl		60.37
Floor Price | $ / bbl		54.80
Sold Put Price | $ / bbl		47.80
Crude Oil Three-Way Collars For Fourth Quarter of Year 1 [Member]
Derivative [Line Items]
Volume | BBL / Days		50,000
Ceiling Price | $ / bbl		60.37
Floor Price | $ / bbl		54.80
Sold Put Price | $ / bbl		47.80
Crude Oil Three-Way Collars For First Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | BBL / Days		20,000
Ceiling Price | $ / bbl		57.86
Floor Price | $ / bbl		53.00
Sold Put Price | $ / bbl		47.00
Crude Oil Three-Way Collars For Second Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | BBL / Days		20,000
Ceiling Price | $ / bbl		57.86
Floor Price | $ / bbl		53.00
Sold Put Price | $ / bbl		47.00
Crude Oil Options For the Third Quarter of Year 1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		35,000
Option Price | $ / bbl		61.91
Crude Oil Options For the Fourth Quarter of Year 1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		35,000
Option Price | $ / bbl		61.91
Crude Oil Options For the First Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Option Price | $ / bbl		0.00
Crude Oil Options For the Second Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Option Price | $ / bbl		0.00
Natural Gas Three-Way Collars For the Third Quarter of Year 1 [Member]
Derivative [Line Items]
Volume | MMBTU		120,000
Ceiling Price		3.58
Floor Price		3.09
Sold Put Price		2.55
Natural Gas Three-Way Collars For the Fourth Quarter of Year 1 [Member]
Derivative [Line Items]
Volume | MMBTU		120,000
Ceiling Price		3.71
Floor Price		3.14
Sold Put Price		2.60
Natural Gas Three-Way Collars For the First Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | MMBTU		200,000
Ceiling Price		3.79
Floor Price		3.08
Sold Put Price		2.55
Natural Gas Three-Way Collars For the Second Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | MMBTU		160,000
Ceiling Price		3.61
Floor Price		3.00
Sold Put Price		2.50
Natural Gas Three-Way Collars For the Third Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | MMBTU		160,000
Ceiling Price		3.61
Floor Price		3.00
Sold Put Price		2.50
Natural Gas Three-Way Collars For the Fourth Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | MMBTU		160,000
Ceiling Price		3.61
Floor Price		3.00
Sold Put Price		2.50
Natural Gas Swaps For the Third Quarter of Year 1 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day		20,000
Option Price		2.93
Natural Gas Swaps For the Fourth Quarter of Year 1 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day		20,000
Option Price		2.93
Natural Gas Swaps For the First Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day		0
Option Price		0.00
Natural Gas Swaps For the Second Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day		0
Option Price		0.00
Natural Gas Swaps For the Third Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day		0
Option Price		0.00
Natural Gas Swaps For the Fourth Quarter of Year 2 [Member]
Derivative [Line Items]
Volume | MMBTU_per_day		0
Option Price		0.00
Subsequent Event [Member] | Crude Oil Three-Way Collars [Domain]
Derivative [Line Items]
Volume | Bbls_per_day	20,000
Ceiling Price | $ / bbl	55.09
Floor Price | $ / bbl	50.00
Sold Put Price | $ / bbl	43.00