Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS (Schedule of Derivative Instruments) (Details)

v3.20.2
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)