Commitments and Contingencies (Components Of Lease Revenue) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Commitments and Contingencies [Abstract]
Operating lease revenue	$ 68,774
Variable lease revenue	(572)	[1]
Sublease revenue	637
Total lease revenue	$ 68,839

[1] Represents amounts delivered by Green Plains Trade and other customers in excess of various minimum volume commitments, as well as the difference between the contracted railcar volumetric capacity and the actual amount provided to Green Plains Trade during the period.