Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND PRICE RISK MANAGEMENT - Weighted Average Price of Derivative Contracts (Details)

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DERIVATIVE INSTRUMENTS AND PRICE RISK MANAGEMENT - Weighted Average Price of Derivative Contracts (Details)
Mcf in Millions
6 Months Ended
Jun. 30, 2020
$ / bbl
bbl
Mcf
Open Commodity Price Swap 2020  
Derivative [Line Items]  
Volume (in barrels) | bbl 4,873,710
Weighted average price (in dollars per barrel) 58.25
Open Commodity Price Swap 2021  
Derivative [Line Items]  
Volume (in barrels) | bbl 7,808,624
Weighted average price (in dollars per barrel) 54.67
Notional amount covered by options (in barrels) | Mcf 0.3
Weighted average price if options are exercised (in dollars per barrel) 57.84
Open Commodity Price Swap 2022  
Derivative [Line Items]  
Volume (in barrels) | bbl 0
Weighted average price (in dollars per barrel) 0
Notional amount covered by options (in barrels) | bbl 3,100,000
Weighted average price if options are exercised (in dollars per barrel) 52.68
Open Commodity Price Swap 2023  
Derivative [Line Items]  
Notional amount covered by options (in barrels) | bbl 700,000
Weighted average price if options are exercised (in dollars per barrel) 44.86
Open Commodity Natural Gas Price Swap 2020  
Derivative [Line Items]  
Volume (in barrels) | bbl 3,220,000
Weighted average price (in dollars per barrel) 2.35
Open Commodity Natural Gas Price Swap 2021  
Derivative [Line Items]  
Volume (in barrels) | bbl 9,575,000
Weighted average price (in dollars per barrel) 2.43