Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS (Schedule of Derivative Instruments) (Details)

v3.21.2
DERIVATIVE INSTRUMENTS (Schedule of Derivative Instruments) (Details)
 9 Months Ended
Sep. 30, 2021
MMBTU
$ / bbl
$ / MMBTU
bbl
NYMEX Henry Hub - Remaining 2021  
Derivative [Line Items]  
Daily volume (in MMBtu) 198,000
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU 2.85
NYMEX Henry Hub - 2022  
Derivative [Line Items]  
Daily volume (in MMBtu) 140,740
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU 2.88
NYMEX Henry Hub - 2022 | Short | Call Option  
Derivative [Line Items]  
Daily volume (in MMBtu) 152,675
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU 2.90
NYMEX Henry Hub - 2023  
Derivative [Line Items]  
Daily volume (in MMBtu) 34,932
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU 3.24
NYMEX Henry Hub - 2023 | Short | Call Option  
Derivative [Line Items]  
Daily volume (in MMBtu) 627,675
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU 2.90
NYMEX WTI - Remaining 2021  
Derivative [Line Items]  
Daily Volume (Bbl/d) | bbl 3,000
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl 57.67
NYMEX WTI - 2022  
Derivative [Line Items]  
Daily Volume (Bbl/d) | bbl 2,104
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl 66.23
Mont Belvieu C3 - Remaining 2021  
Derivative [Line Items]  
Daily Volume (Bbl/d) | bbl 3,100
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl 27.80
Mont Belvieu C3 - 2022  
Derivative [Line Items]  
Daily Volume (Bbl/d) | bbl 3,378
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl 35.09
NYMEX Henry Hub - Remaining 2021 Index1  
Derivative [Line Items]  
Daily volume (in MMBtu) 610,000
Weighted average floor price (in usd per MMBtu) | $ / MMBTU 2.59
Weighted average ceiling price (in usd per MMBtu) | $ / bbl 3.02
NYMEX Henry Hub Index 1  
Derivative [Line Items]  
Daily volume (in MMBtu) 406,747
Weighted average floor price (in usd per MMBtu) | $ / MMBTU 2.58
Weighted average ceiling price (in usd per MMBtu) | $ / bbl 2.91
NYMEX WTI 2022 Index 1  
Derivative [Line Items]  
Daily volume (in MMBtu) 1,500
Weighted average floor price (in usd per MMBtu) | $ / MMBTU 55.00
Weighted average ceiling price (in usd per MMBtu) | $ / bbl 60.00
Basis Swap, Rex Zone 3 - Remaining 2021  
Derivative [Line Items]  
Daily volume (in MMBtu) 83,152
Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU (0.12)
Basis Swap, Rex Zone 3 - 2022  
Derivative [Line Items]  
Daily volume (in MMBtu) 24,658
Weighted average price (in usd per MMBtu or Bbl) | $ / bbl (0.10)