Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS (Schedule of Derivative Instruments) (Details)

v3.21.1
DERIVATIVE INSTRUMENTS (Schedule of Derivative Instruments) (Details)
 3 Months Ended
Mar. 31, 2021
MMBTU
$ / bbl
$ / MMBTU
bbl
NYMEX Henry Hub - Remaining 2021  
Derivative [Line Items]  
Daily Volume (MMBtu/day) 351,316
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU 2.73
NYMEX WTI - Remaining 2021  
Derivative [Line Items]  
Daily Volume (Bbl/day) | bbl 1,505
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl 53.07
Mont Belvieu C3 - Remaining 2021  
Derivative [Line Items]  
Daily Volume (Bbl/day) | bbl 2,074
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl 27.80
Mont Belvieu C3 - 2022  
Derivative [Line Items]  
Daily Volume (Bbl/day) | bbl 496
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl 27.30
NYMEX Henry Hub - 2022 | Short | Call Option  
Derivative [Line Items]  
Daily Volume (MMBtu/day) 152,675
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU 2.90
NYMEX Henry Hub - 2023 | Short | Call Option  
Derivative [Line Items]  
Daily Volume (MMBtu/day) 627,675
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU 2.90
NYMEX Henry Hub - Remaining 2021 Index1  
Derivative [Line Items]  
Daily Volume (MMBtu/day) 390,509
Weighted average floor price (in usd per MMBtu) | $ / MMBTU 2.54
Weighted average ceiling price (in usd per MMBtu) | $ / bbl 2.93
NYMEX Henry Hub 2022 Index2  
Derivative [Line Items]  
Daily Volume (MMBtu/day) 186,438
Weighted average floor price (in usd per MMBtu) | $ / MMBTU 2.63
Weighted average ceiling price (in usd per MMBtu) | $ / bbl 3.04
Basis Swap, Rex Zone 3 - Remaining 2021  
Derivative [Line Items]  
Daily Volume (MMBtu/day) 85,309
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU (0.22)
Basis Swap, Tetco M2 - Remaining 2021  
Derivative [Line Items]  
Daily Volume (MMBtu/day) 32,384
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU (0.63)
Basis Swap, Rex Zone 3 - 2022  
Derivative [Line Items]  
Daily Volume (MMBtu/day) 14,795
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl (0.10)