Derivative Financial Instruments (Details 2) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Offsetting Derivative Assets [Abstract]
Derivative liability		$ (3,881)
Total	$ (35,889)
Derivative Asset (Liability) Subject to Master Netting Arrangement	0
Derivative Asset (Liability), Net	(35,889)
Offsetting Derivative Liabilities [Abstract]
Derivative Asset		0
Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts of recognized liabilities		442,291
Gross amounts netted in the consolidated balance sheet		442,291
Derivative liability		0
Offsetting Derivative Liabilities [Abstract]
Gross amounts of recognized assets	382,328
Gross amounts netted in the consolidated balance sheets	(375,601)
Derivative Asset	6,727
Other Assets
Offsetting Derivative Liabilities [Abstract]
Gross amounts of recognized assets	150,194	280,397
Gross amounts netted in the consolidated balance sheets	(147,624)	(280,397)
Derivative Asset	2,570	0
Long-term liabilities
Offsetting Derivative Assets [Abstract]
Gross amounts of recognized liabilities	(147,624)	(282,381)
Gross amounts netted in the consolidated balance sheet	(147,624)	(280,397)
Derivative liability	0	(1,984)
Current liabilities
Offsetting Derivative Assets [Abstract]
Gross amounts of recognized liabilities	(420,787)	(444,188)
Gross amounts netted in the consolidated balance sheet	(375,601)	(442,291)
Derivative liability	$ (45,186)	$ (1,897)

Derivative Asset (Liability), Net

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Derivative Asset (Liability) Subject to Master Netting Arrangement

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Fair value of liability associated with 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.

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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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