Derivative Financial Instruments (Details)		1 Months Ended	3 Months Ended
	Jun. 30, 2016 MMBTU $ / EnergyContent $ / Barrels bbl	Jul. 27, 2016 MMBTU $ / EnergyContent $ / Barrels bbl	Mar. 31, 2016 MMBTU $ / EnergyContent
NYMEX Oil Swap Contract Third Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	1,840,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	71.80
NYMEX Oil Swap Contract Fourth Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	1,399,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	67.73
NYMEX Oil Swap Contract 2017 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	3,053,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	45.61
NYMEX Oil Swap Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	6,292,000
NYMEX Oil Collar Contract Third Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	672,000
Derivative, Floor Price | $ / Barrels	40.00
Derivative, Cap Price | $ / Barrels	51.57
NYMEX Oil Collar Contract Fourth Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	881,000
Derivative, Floor Price | $ / Barrels	40.00
Derivative, Cap Price | $ / Barrels	51.52
NYMEX Oil Collar Contract 2017 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	1,018,000
Derivative, Floor Price | $ / Barrels	45.00
Derivative, Cap Price | $ / Barrels	51.02
NYMEX Oil Collar Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	2,571,000
Gas Swaps Contract Third Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Energy Measure, Purchased Volumes | MMBTU	0
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	25,724,000
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent	3.13
Derivative, Swap Type, Average Fixed Price, Purchased Volumes | $ / EnergyContent	0.00
Derivative, Nonmonetary Notional Amount, Energy Measure, Net of Purchased Volumes | MMBTU	25,724,000
Gas Swaps Contract Fourth Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Energy Measure, Purchased Volumes | MMBTU	0
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	26,700,000
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent	3.34
Derivative, Swap Type, Average Fixed Price, Purchased Volumes | $ / EnergyContent	0.00
Derivative, Nonmonetary Notional Amount, Energy Measure, Net of Purchased Volumes | MMBTU	26,700,000
Gas Swaps Contract 2017 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Energy Measure, Purchased Volumes | MMBTU	0
Derivative, Nonmonetary Notional Amount, Energy Measure, Sold Volumes | MMBTU			38,600,000
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	88,894,000
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent	4.04		4.43
Derivative, Swap Type, Average Fixed Price, Purchased Volumes | $ / EnergyContent	0.00
Derivative, Nonmonetary Notional Amount, Energy Measure, Net of Purchased Volumes | MMBTU	88,894,000
Gas Swaps Contract 2018 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Energy Measure, Purchased Volumes | MMBTU	(30,606,000)
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	53,048,000
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent	3.75
Derivative, Swap Type, Average Fixed Price, Purchased Volumes | $ / EnergyContent	4.27
Derivative, Nonmonetary Notional Amount, Energy Measure, Net of Purchased Volumes | MMBTU	22,442,000
Gas Swaps Contract 2019 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Energy Measure, Purchased Volumes | MMBTU	(24,415,000)
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	24,415,000
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent	4.34
Derivative, Swap Type, Average Fixed Price, Purchased Volumes | $ / EnergyContent	4.34
Derivative, Nonmonetary Notional Amount, Energy Measure, Net of Purchased Volumes | MMBTU	0
Gas Swaps Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Energy Measure, Purchased Volumes | MMBTU	(55,021,000)		(55,021,000)
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	218,781,000
Derivative, Nonmonetary Notional Amount, Energy Measure, Net of Purchased Volumes | MMBTU	163,760,000
IF El Paso Permian [Member]
Derivative Financial Instruments
Index percent of natural gas fixed swaps	2.00%
IF HSC [Member]
Derivative Financial Instruments
Index percent of natural gas fixed swaps	97.00%
IF NNG Ventura [Member]
Derivative Financial Instruments
Index percent of natural gas fixed swaps	1.00%
OPIS Ethane Purity Mont Belvieu [Member] | NGL Swaps Contract Third Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	751,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	8.70
OPIS Ethane Purity Mont Belvieu [Member] | NGL Swaps Contract Fourth Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	687,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	8.71
OPIS Ethane Purity Mont Belvieu [Member] | NGL Swaps Contract 2017 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	3,062,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	8.92
OPIS Ethane Purity Mont Belvieu [Member] | NGL Swaps Contract 2018 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	2,435,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	10.18
OPIS Ethane Purity Mont Belvieu [Member] | NGL Swaps Contract 2019 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	1,200,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	10.92
OPIS Ethane Purity Mont Belvieu [Member] | NGL Swaps Contract 2020 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	539,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	11.13
OPIS Ethane Purity Mont Belvieu [Member] | NGL Swaps Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	8,674,000
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Third Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	863,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	19.03
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Fourth Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	792,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	18.53
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2017 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	721,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	20.01
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2018 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2019 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2020 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	2,376,000
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Third Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	248,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	22.90
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Fourth Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	226,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	22.91
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2017 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2018 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2019 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2020 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	474,000
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Third Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	200,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	23.24
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Fourth Quarter 2016 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	182,000
Derivative, Swap Type, Average Fixed Price | $ / Barrels	23.25
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2017 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2018 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2019 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2020 [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	0
Derivative, Swap Type, Average Fixed Price | $ / Barrels	0.00
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume	382,000
Subsequent Event [Member] | NYMEX Oil Collar Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume		1,400,000
Derivative, Floor Price | $ / Barrels		45.00
Derivative, Cap Price | $ / Barrels		56.25
Subsequent Event [Member] | NGL Swaps Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Volume		1,400,000
Subsequent Event [Member] | Gas Contracts [Member]
Derivative Financial Instruments
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU		15,600,000
Minimum [Member] | Subsequent Event [Member] | NGL Swaps Contracts [Member]
Derivative Financial Instruments
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent		21.32
Minimum [Member] | Subsequent Event [Member] | Gas Contracts [Member]
Derivative Financial Instruments
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent		2.90
Maximum [Member] | Subsequent Event [Member] | NGL Swaps Contracts [Member]
Derivative Financial Instruments
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent		21.79
Maximum [Member] | Subsequent Event [Member] | Gas Contracts [Member]
Derivative Financial Instruments
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent		3.24