Impact of Derivative Instruments on Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative [Line Items]
Commodity price risk management gain (loss), net	$ 434,698	$ (190,074)
Commodity Price Risk Management (loss), net
Derivative [Line Items]
Commodity price risk management gain (loss), net	45,823	(8,452)
Net change in fair value of unsettled derivatives	388,875	(181,622)
Total commodity price risk management gain (loss), net	$ 434,698	$ (190,074)