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DERIVATIVE INSTRUMENTS (Schedule of Derivative Instruments) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) $ / bbl $ / MMBTU bbl | Jun. 30, 2020 USD ($) MMBTU $ / bbl $ / MMBTU bbl | Jun. 30, 2019 USD ($)
Derivative [Line Items] |  |  |
Daily Volume (Bbls/day) | bbl | 6,000 |  |
Net cash receipts (payments) on settled derivative instruments | $ | $ 40,500 | $ 195,232 | $ (1,494)
NYMEX Henry Hub - Remaining 2020 |  |  |
Derivative [Line Items] |  |  |
Daily Volume (MMBtu/day) | MMBTU |  | 357,000 |
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | 2.86 | 2.86 |
NYMEX WTI - Remaining 2020 |  |  |
Derivative [Line Items] |  |  |
Daily Volume (Bbls/day) | bbl |  | 3,000 |
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl | 35.49 | 35.49 |
Mont Belvieu C3 - Remaining 2020 |  |  |
Derivative [Line Items] |  |  |
Daily Volume (Bbls/day) | bbl |  | 1,500 |
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl | 20.27 | 20.27 |
NYMEX Henry Hub - 2022 | Short | Call Option |  |  |
Derivative [Line Items] |  |  |
Daily Volume (MMBtu/day) | MMBTU |  | 628,000 |
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | 2.90 | 2.90 |
NYMEX Henry Hub - 2023 | Short | Call Option |  |  |
Derivative [Line Items] |  |  |
Daily Volume (MMBtu/day) | MMBTU |  | 628,000 |
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | 2.90 | 2.90 |
NYMEX Henry Hub - 2021 |  |  |
Derivative [Line Items] |  |  |
Daily Volume (MMBtu/day) | MMBTU |  | 250,000 |
Weighted average floor price (in usd per MMBtu) | $ / MMBTU | 2.46 | 2.46 |
Weighted average ceiling price (in usd per MMBtu) | $ / bbl | 2.81 | 2.81 |
Transco Zone 4 - Remaining 2020 | Long |  |  |
Derivative [Line Items] |  |  |
Daily Volume (MMBtu/day) | MMBTU |  | 60,000 |
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | (0.05) | (0.05) |
Fixed Spread - Remaining 2020 | Long |  |  |
Derivative [Line Items] |  |  |
Daily Volume (MMBtu/day) | MMBTU |  | 10,000 |
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU | (0.54) | (0.54) |

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- Definition The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract. + References No definition available. + Details
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