Risk Management and Derivative Instruments - Open Commodity Positions Disaggregated Basis (Detail) - Disaggregated Basis Swap [Member] | 3 Months Ended |
Mar. 31, 2016MMBTU$ / MMBTU$ / bblbbl |
Remaining 2016 [Member] | Natural Gas Derivative Contracts NGPL TexOk Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 2,997,778 |
Remaining 2016 [Member] | Natural Gas Derivative Contracts HSC Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 135,000 |
Remaining 2016 [Member] | Natural Gas Derivative Contracts CIG Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 170,000 |
Remaining 2016 [Member] | Natural Gas Derivative Contracts TETCO STX Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 270,000 |
Remaining 2016 [Member] | Crude Oil Derivative Contracts Midway-Sunset Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (Bbls) | bbl | 99,667 |
Remaining 2016 [Member] | Crude Oil Derivative Contracts Midland Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (Bbls) | bbl | 40,000 |
Remaining 2016 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts NGPL TexOk Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | (0.07) |
Remaining 2016 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts HSC Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0.07 |
Remaining 2016 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts CIG Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | (0.30) |
Remaining 2016 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts TETCO STX Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0.06 |
Remaining 2016 [Member] | Brent | Crude Oil Derivative Contracts Midway-Sunset Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / bbl | (12.29) |
Remaining 2016 [Member] | WTI | Crude Oil Derivative Contracts Midland Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / bbl | (4.34) |
2017 [Member] | Natural Gas Derivative Contracts NGPL TexOk Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 1,800,000 |
2017 [Member] | Natural Gas Derivative Contracts HSC Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 115,000 |
2017 [Member] | Natural Gas Derivative Contracts CIG Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 0 |
2017 [Member] | Natural Gas Derivative Contracts TETCO STX Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 295,000 |
2017 [Member] | Crude Oil Derivative Contracts Midway-Sunset Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (Bbls) | bbl | 37,500 |
2017 [Member] | Crude Oil Derivative Contracts Midland Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (Bbls) | bbl | 30,000 |
2017 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts NGPL TexOk Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | (0.07) |
2017 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts HSC Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0.14 |
2017 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts CIG Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0 |
2017 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts TETCO STX Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0.03 |
2017 [Member] | Brent | Crude Oil Derivative Contracts Midway-Sunset Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / bbl | (12.20) |
2017 [Member] | WTI | Crude Oil Derivative Contracts Midland Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / bbl | (2.35) |
2018 [Member] | Natural Gas Derivative Contracts NGPL TexOk Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 1,200,000 |
2018 [Member] | Natural Gas Derivative Contracts HSC Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 115,000 |
2018 [Member] | Natural Gas Derivative Contracts CIG Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 0 |
2018 [Member] | Natural Gas Derivative Contracts TETCO STX Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 0 |
2018 [Member] | Crude Oil Derivative Contracts Midway-Sunset Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (Bbls) | bbl | 0 |
2018 [Member] | Crude Oil Derivative Contracts Midland Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (Bbls) | bbl | 0 |
2018 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts NGPL TexOk Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | (0.03) |
2018 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts HSC Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0.15 |
2018 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts CIG Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0 |
2018 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts TETCO STX Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0 |
2018 [Member] | Brent | Crude Oil Derivative Contracts Midway-Sunset Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / bbl | 0 |
2018 [Member] | WTI | Crude Oil Derivative Contracts Midland Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / bbl | 0 |
2019 [Member] | Natural Gas Derivative Contracts NGPL TexOk Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 900,000 |
2019 [Member] | Natural Gas Derivative Contracts HSC Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 0 |
2019 [Member] | Natural Gas Derivative Contracts CIG Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 0 |
2019 [Member] | Natural Gas Derivative Contracts TETCO STX Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (MMBtu) | MMBTU | 0 |
2019 [Member] | Crude Oil Derivative Contracts Midway-Sunset Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (Bbls) | bbl | 0 |
2019 [Member] | Crude Oil Derivative Contracts Midland Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Average Monthly Volume (Bbls) | bbl | 0 |
2019 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts NGPL TexOk Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0.01 |
2019 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts HSC Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0 |
2019 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts CIG Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0 |
2019 [Member] | Henry Hub [Member] | Natural Gas Derivative Contracts TETCO STX Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / MMBTU | 0 |
2019 [Member] | Brent | Crude Oil Derivative Contracts Midway-Sunset Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / bbl | 0 |
2019 [Member] | WTI | Crude Oil Derivative Contracts Midland Basis Swaps [Member] | |
Combination Of Commodity Derivatives To Manage Exposure To Commodity Price Volatility [Abstract] | |
Spread | $ / bbl | 0 |