Derivative Financial Instruments Impact of Netting Agreements (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivative Asset:
Derivative assets, gross	$ (237,038)	$ (31,824)
Effect of master netting agreements	46,969	2,619
Derivative asset, net	190,069	29,205
Derivative Liability:
Derivative liability, gross	60,820	3,613
Effect of master netting agreements	(46,969)	(2,619)
Derivative liability, net	$ 13,851	$ 994

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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