Financial Instruments - Schedule of Fair Value of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Price Risk Derivatives [Line Items]
Assets from price risk management activities	$ 2	$ 6,876
Assets from price risk management activities	49	945
Liabilities from price risk management activities	248,361	66,010
Liabilities from price risk management activities	35,856	9,625
Oil and Natural Gas Derivatives
Price Risk Derivatives [Line Items]
Assets from price risk management activities	2
Assets from price risk management activities	49	945
Total gross amounts presented on balance sheet, Liabilities	284,217	75,635
Total gross amounts presented on balance sheet, Assets	51	7,821
Gross amounts not offset on the balance sheet	51	4,877
Net Amounts	0	2,944
Liabilities from price risk management activities	248,361	66,010
Liabilities from price risk management activities	35,856	9,625
Gross amounts not offset on the balance sheet	51	4,877
Net Amounts	$ 284,166	$ 70,758