Financial Instruments - Schedule of Fair Value of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Price Risk Derivatives [Line Items]
Current, Assets	$ 6,876	$ 8,393
Non-current, Assets	945
Current, Liabilities	66,010	19,476
Non-current, Liabilities	9,625	511
Oil and Natural Gas Derivatives
Price Risk Derivatives [Line Items]
Current, Assets	6,876	8,393
Non-current, Assets	945
Assets	7,821	8,393
Current, Liabilities	66,010	19,476
Non-current, Liabilities	9,625	511
Liabilities	$ 75,635	$ 19,987

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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