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Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Detail) | Sep. 30, 2019 MMBTU / d bbl / d $ / MMBTU $ / bbl $ / gal
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2019 Commodity Contract | Swaps | Natural Gas |  |
Derivative [Line Items] |  |
Volume Hedged | MMBTU / d | 1,271,739 |
Weighted Average Hedge Price | $ / MMBTU | 2.82 |
2019 Commodity Contract | Swaps | Crude Oil |  |
Derivative [Line Items] |  |
Volume Hedged | 9,168 |
Weighted Average Hedge Price | $ / bbl | 56.11 |
2019 Commodity Contract | Swaps | NGLs (C3-Propane) |  |
Derivative [Line Items] |  |
Volume Hedged | 500 |
Weighted Average Hedge Price | $ / gal | 0.53 |
2019 Commodity Contract | Swaps | NGLs (NC4-Normal Butane) |  |
Derivative [Line Items] |  |
Volume Hedged | 1,000 |
Weighted Average Hedge Price | $ / gal | 0.60 |
2019 Commodity Contract | Swaps | NGLs (C5-Natural Gasoline) |  |
Derivative [Line Items] |  |
Volume Hedged | 5,500 |
Weighted Average Hedge Price | $ / gal | 1.30 |
2019 Commodity Contract | Swaps | NGLs (iC4-Iso Butane) |  |
Derivative [Line Items] |  |
Volume Hedged | 500 |
Weighted Average Hedge Price | $ / gal | 0.75 |
2019 Commodity Contract | Swaptions | Natural Gas |  |
Derivative [Line Items] |  |
Volume Hedged | MMBTU / d | 140,000 |
Weighted Average Hedge Price | $ / MMBTU | 2.81 | [1]
2019 Commodity Contract | Collars | Crude Oil |  |
Derivative [Line Items] |  |
Volume Hedged | 1,000 |
2019 Commodity Contract | Collars | Crude Oil | Minimum |  |
Derivative [Line Items] |  |
Weighted Average Hedge Price | $ / gal | 63.00 |
2019 Commodity Contract | Collars | Crude Oil | Maximum |  |
Derivative [Line Items] |  |
Weighted Average Hedge Price | $ / gal | 73.00 |
2020 Commodity Contract | Swaps | Natural Gas |  |
Derivative [Line Items] |  |
Volume Hedged | MMBTU / d | 674,208 |
Weighted Average Hedge Price | $ / MMBTU | 2.64 |
2020 Commodity Contract | Swaps | Crude Oil |  |
Derivative [Line Items] |  |
Volume Hedged | 6,738 |
Weighted Average Hedge Price | $ / bbl | 58.53 |
2020 Commodity Contract | Swaptions | Natural Gas |  |
Derivative [Line Items] |  |
Volume Hedged | MMBTU / d | 147,568 |
Weighted Average Hedge Price | $ / MMBTU | 2.77 | [1]
2020 Commodity Contract | Swaptions | Crude Oil |  |
Derivative [Line Items] |  |
Volume Hedged | 1,000 |
Weighted Average Hedge Price | $ / gal | 57.00 | [2]
2020 Commodity Contract | Calls | Crude Oil |  |
Derivative [Line Items] |  |
Volume Hedged | 500 |
Weighted Average Hedge Price | $ / gal | 59.00 |
2021 Commodity Contract | Swaptions | Natural Gas |  |
Derivative [Line Items] |  |
Volume Hedged | MMBTU / d | 30,000 |
Weighted Average Hedge Price | $ / MMBTU | 2.70 | [1]
2021 Commodity Contract | Swaptions | Crude Oil |  |
Derivative [Line Items] |  |
Volume Hedged | 1,000 |
Weighted Average Hedge Price | $ / gal | 55.00 | [2]
[1] | Contains a combined derivative instrument consisting of a fixed price swap and a sold option to extend or double the volumes. We have swaps in place for 2019 for 140,000 Mmbtu/day on which the counterparty can elect to extend the contract through December 2020 at a weighted average price of $2.81. In 2020, if the counterparty elects to double the volume, we would have additional swaps in place for 110,000 Mmbtu/day at a weighted average price of $2.78. We also have swaps in place for 2020 for 50,000 Mmbtu/day on which the counterparty can elect to extend the contract through December 2021 at a weighted average price of $2.75. In 2021, if the counterparty elects to double the volume, we would have additional swaps in place for 30,000 Mmbtu/day at a weighted average price of $2.70.
[2] | Contains a combined derivative instrument consisting of a fixed price swap and a sold option to extend or double the volumes. We have swaps in place for 2020 for 1,000 bbls/day on which the counterparty can elect to extend the contract through 2021 at a weighted average price of $57.00. In 2021, if the counterparty elects to double the volume, we would have additional swaps in place for 1,000 bbls/day at a weighted average price of $55.00.

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