Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND PRICE RISK MANAGEMENT - Gains/Losses on Derivatives (Details)

v3.21.1
DERIVATIVE INSTRUMENTS AND PRICE RISK MANAGEMENT - Gains/Losses on Derivatives (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Gain (Loss) on Settled Commodity Derivatives $ (7,297) $ 31,506
Gain (Loss) on Unsettled Commodity Derivatives (128,638) 345,075
Gain (Loss) on Commodity Derivatives, Net $ (135,935) $ 376,581