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DERIVATIVE AND HEDGING ACTIVITIES - Open Contracts (Details) - Commodity contracts | Sep. 30, 2019 MMBTU $ / bbl bbl | Dec. 31, 2018 MMBTU $ / MMBTU $ / bbl bbl
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July 2019 - December 2019 | Collars | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 552,000
July 2019 - December 2019 | Collars | Crude oil | Minimum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 50.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 55.00
July 2019 - December 2019 | Collars | Crude oil | Maximum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 55.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 69.00
July 2019 - December 2019 | Collars | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 53.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 61.00
July 2019 - December 2019 | Basis Swap | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 460,000
July 2019 - December 2019 | Basis Swap | Crude oil | Minimum |  |
Derivative and hedging activities |  |
Basis Differential |  | (2.40)
July 2019 - December 2019 | Basis Swap | Crude oil | Maximum |  |
Derivative and hedging activities |  |
Basis Differential |  | (6.50)
July 2019 - December 2019 | Basis Swap | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Basis Differential |  | (5.68)
October 2019 - December 2019 | Collars | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 736,000 | 92,000
Floors (in dollars per Mmbtu's/Bbl's) |  | 51.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 56.00
October 2019 - December 2019 | Collars | Crude oil | Minimum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 50.00 |
Ceilings (in dollars per Mmbtu's/Bbl's) | 55.00 |
October 2019 - December 2019 | Collars | Crude oil | Maximum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 55.85 |
Ceilings (in dollars per Mmbtu's/Bbl's) | 60.85 |
October 2019 - December 2019 | Collars | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 52.61 | 51.00
Ceilings (in dollars per Mmbtu's/Bbl's) | 57.89 | 56.00
October 2019 - December 2019 | Collars | Natural gas |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 1,978,000 |
October 2019 - December 2019 | Collars | Natural gas | Minimum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 2.52 |
Ceilings (in dollars per Mmbtu's/Bbl's) | 3.00 |
October 2019 - December 2019 | Collars | Natural gas | Maximum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 2.70 |
Ceilings (in dollars per Mmbtu's/Bbl's) | 3.10 |
October 2019 - December 2019 | Collars | Natural gas | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 2.60 |
Ceilings (in dollars per Mmbtu's/Bbl's) | 3.01 |
October 2019 - December 2019 | Basis Swap | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 828,000 | 460,000
October 2019 - December 2019 | Basis Swap | Crude oil | Minimum |  |
Derivative and hedging activities |  |
Basis Differential | (6.50) | 3.45
October 2019 - December 2019 | Basis Swap | Crude oil | Maximum |  |
Derivative and hedging activities |  |
Basis Differential | 4.00 | 4.00
October 2019 - December 2019 | Basis Swap | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Basis Differential | 0.31 | 3.72
October 2019 - December 2019 | Basis Swap | Natural gas |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 2,346,000 |
October 2019 - December 2019 | Basis Swap | Natural gas | Minimum |  |
Derivative and hedging activities |  |
Basis Differential | (1.05) |
October 2019 - December 2019 | Basis Swap | Natural gas | Maximum |  |
Derivative and hedging activities |  |
Basis Differential | (1.40) |
October 2019 - December 2019 | Basis Swap | Natural gas | Weighted Average |  |
Derivative and hedging activities |  |
Basis Differential | (1.18) |
October 2019 - December 2019 | Swap | Natural gas liquids |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 322,000 | 92,000
Floors (in dollars per Mmbtu's/Bbl's) |  | 32.50
October 2019 - December 2019 | Swap | Natural gas liquids | Minimum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 29.08 |
October 2019 - December 2019 | Swap | Natural gas liquids | Maximum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 29.50 |
October 2019 - December 2019 | Swap | Natural gas liquids | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 29.21 | 32.50
October 2019 - December 2019 | WTI NYMEX Roll | Crude oil |  |
Derivative and hedging activities |  |
Volume in Mmbtu's | MMBTU | 460,000 |
Floors (in dollars per Mmbtu's/Bbl's) | 0.35 |
October 2019 - December 2019 | WTI NYMEX Roll | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 0.35 |
January 2020 - December 2020 | Collars | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 549,000 | 549,000
Floors (in dollars per Mmbtu's/Bbl's) | 50.00 | 50.00
Ceilings (in dollars per Mmbtu's/Bbl's) | 70.00 | 70.00
January 2020 - December 2020 | Collars | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 50.00 | 50.00
Ceilings (in dollars per Mmbtu's/Bbl's) | 70.00 | 70.00
January 2020 - December 2020 | Basis Swap | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 3,294,000 | 3,294,000
January 2020 - December 2020 | Basis Swap | Crude oil | Minimum |  |
Derivative and hedging activities |  |
Basis Differential | 2.00 | 2.00
January 2020 - December 2020 | Basis Swap | Crude oil | Maximum |  |
Derivative and hedging activities |  |
Basis Differential | 4.00 | 4.00
January 2020 - December 2020 | Basis Swap | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Basis Differential | 2.95 | 2.95
January 2020 - December 2020 | Swap | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 366,000 |
Floors (in dollars per Mmbtu's/Bbl's) | 60.00 |
January 2020 - December 2020 | Swap | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 60.00 |
January 2020 - December 2020 | Call option | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 2,342,400 | 2,342,400
Ceilings (in dollars per Mmbtu's/Bbl's) | 70.00 | 70.00
January 2020 - December 2020 | Call option | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Ceilings (in dollars per Mmbtu's/Bbl's) | 70.00 | 70.00
January 2020 - December 2020 | Put options | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl | 915,000 | 915,000
Floors (in dollars per Mmbtu's/Bbl's) | 55.00 | 55.00
January 2020 - December 2020 | Put options | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | 55.00 | 55.00
January 2019 - March 2019 | Collars | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 90,000
Floors (in dollars per Mmbtu's/Bbl's) |  | 46.75
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 51.75
January 2019 - March 2019 | Collars | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 46.75
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 51.75
January 2019 - March 2019 | Call option | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 1,350,000
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 62.64
January 2019 - March 2019 | Call option | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Ceilings (in dollars per Mmbtu's/Bbl's) | $ / MMBTU |  | 62.64
January 2019 - March 2019 | Call option | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | (1,350,000)
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 58.64
January 2019 - March 2019 | Call option | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 58.64
January 2019 - June 2019 | Collars | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 181,000
Floors (in dollars per Mmbtu's/Bbl's) |  | 51.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 56.00
January 2019 - June 2019 | Collars | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 51.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 56.00
January 2019 - September 2019 | Basis Swap | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 546,000
January 2019 - September 2019 | Basis Swap | Crude oil | Minimum |  |
Derivative and hedging activities |  |
Basis Differential | $ / MMBTU |  | (6.20)
January 2019 - September 2019 | Basis Swap | Crude oil | Maximum |  |
Derivative and hedging activities |  |
Basis Differential | $ / MMBTU |  | (7.60)
January 2019 - September 2019 | Basis Swap | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Basis Differential | $ / MMBTU |  | (6.90)
January 2019 - December 2019 | Collars | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 3,650,000
January 2019 - December 2019 | Collars | Crude oil | Minimum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 50.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 55.20
January 2019 - December 2019 | Collars | Crude oil | Maximum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 58.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 63.00
January 2019 - December 2019 | Collars | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 53.87
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 60.07
January 2019 - December 2019 | Collars | Natural gas |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 8,760,000
January 2019 - December 2019 | Collars | Natural gas | Minimum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 2.52
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 3.00
January 2019 - December 2019 | Collars | Natural gas | Maximum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 2.70
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 3.10
January 2019 - December 2019 | Collars | Natural gas | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 2.60
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 3.01
January 2019 - December 2019 | Basis Swap | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 2,448,000
January 2019 - December 2019 | Basis Swap | Crude oil | Minimum |  |
Derivative and hedging activities |  |
Basis Differential |  | (0.98)
January 2019 - December 2019 | Basis Swap | Crude oil | Maximum |  |
Derivative and hedging activities |  |
Basis Differential |  | (6.50)
January 2019 - December 2019 | Basis Swap | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Basis Differential |  | (2.80)
January 2019 - December 2019 | Basis Swap | Natural gas |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 9,307,500
January 2019 - December 2019 | Basis Swap | Natural gas | Minimum |  |
Derivative and hedging activities |  |
Basis Differential |  | (1.05)
January 2019 - December 2019 | Basis Swap | Natural gas | Maximum |  |
Derivative and hedging activities |  |
Basis Differential |  | (1.40)
January 2019 - December 2019 | Basis Swap | Natural gas | Weighted Average |  |
Derivative and hedging activities |  |
Basis Differential |  | (1.18)
January 2019 - December 2019 | Swap | Natural gas liquids |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 1,460,000
January 2019 - December 2019 | Swap | Natural gas liquids | Minimum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 29.08
January 2019 - December 2019 | Swap | Natural gas liquids | Maximum |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 30.15
January 2019 - December 2019 | Swap | Natural gas liquids | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 29.33
January 2019 - December 2019 | WTI NYMEX Roll | Crude oil |  |
Derivative and hedging activities |  |
Volume in Mmbtu's | MMBTU |  | 1,825,000
Floors (in dollars per Mmbtu's/Bbl's) | $ / MMBTU |  | 0.35
January 2019 - December 2019 | WTI NYMEX Roll | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) | $ / MMBTU |  | 0.35
April 2019 - June 2019 | Collars | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 91,000
Floors (in dollars per Mmbtu's/Bbl's) |  | 50.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 55.00
April 2019 - June 2019 | Collars | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 50.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 55.00
April 2019 - December 2019 | Collars | Crude oil |  |
Derivative and hedging activities |  |
Volume in Bbl's | bbl |  | 275,000
Floors (in dollars per Mmbtu's/Bbl's) |  | 55.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 62.85
April 2019 - December 2019 | Collars | Crude oil | Weighted Average |  |
Derivative and hedging activities |  |
Floors (in dollars per Mmbtu's/Bbl's) |  | 55.00
Ceilings (in dollars per Mmbtu's/Bbl's) |  | 62.85

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