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Derivative Instruments - Schedule of Derivative Instruments (Details) | 12 Months Ended
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Dec. 31, 2018 MMBTU $ / bbl $ / MMBTU bbl
NYMEX Henry Hub Swap - 2019 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 1,254,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / MMBTU | 2.83
NYMEX Henry Hub Swap - 2020 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 204,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / MMBTU | 2.77
Mont Belvieu C2 - 2019 |
Derivative [Line Items] |
Daily Volume (Bbls/day) | bbl | 1,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / bbl | 18.48
Mont Belvieu C3 Swap - 2019 |
Derivative [Line Items] |
Daily Volume (Bbls/day) | bbl | 4,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / bbl | 28.87
Mont Belvieu C5 Swap - 2019 |
Derivative [Line Items] |
Daily Volume (Bbls/day) | bbl | 500
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / bbl | 54.08
NYMEX Henry Hub Swap - January 2019 to March 2019 | Call option | Short |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 50,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / MMBTU | 3.13
NYMEX Henry Hub Swap - April 2019 to December 2019 | Call option | Short |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 30,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / MMBTU | 3.10
Transco Zone 4 - 2019 | Call option | Short |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 60,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / MMBTU | 0.05
Transco Zone 4 - 2020 | Call option | Short |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 60,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / MMBTU | 0.05

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