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DERIVATIVE INSTRUMENTS (Schedule of Derivative Instruments) (Details) | 6 Months Ended
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Jun. 30, 2019 MMBTU $ / bbl $ / MMBTU bbl
NYMEX Henry Hub Swap - 2019 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 1,380,000
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | (2.81)
NYMEX Henry Hub Swap - 2019 | Short | Call Option |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 30,000
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | (3.10)
NYMEX Henry Hub Swap - 2020 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 204,000
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | (2.77)
NYMEX WTI Swap - 2019 |
Derivative [Line Items] |
Daily Volume (Bbls/day) | bbl | 6,000
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl | (60.81)
NYMEX WTI Swap - 2020 |
Derivative [Line Items] |
Daily Volume (Bbls/day) | bbl | 6,000
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl | (59.82)
Mont Belvieu C2 - 2019 |
Derivative [Line Items] |
Daily Volume (Bbls/day) | bbl | 1,000
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl | (18.48)
Mont Belvieu C3 Swap - 2019 |
Derivative [Line Items] |
Daily Volume (Bbls/day) | bbl | 4,000
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl | (29.02)
Mont Belvieu C5 Swap - 2019 |
Derivative [Line Items] |
Daily Volume (Bbls/day) | bbl | 1,000
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl | (53.71)
Transco Zone 4 - 2019 | Long |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 60,000
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | (0.05)
Transco Zone 4 - 2020 | Long |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 60,000
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | (0.05)
Fixed Spread - 2020 | Long |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU | 10,000
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | (0.54)

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