Equity Method Investments (Summary Of Equity Method Investments) (Details) - USD ($) $ in Thousands		Dec. 31, 2019		Dec. 11, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Investment balance in joint venture		$ 68,998			$ 29,714
Green Plains Cattle Company LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investment balance in joint venture	[1]	$ 64,161
Equity method investment, ownership interest	[1]	50.00%
JGP Energy Partners LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investment balance in joint venture	[2]				25,362
Equity method investment, ownership interest		0.00%	[2]	50.00%
Optimal Aqua LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investment balance in joint venture		$ 508			704
Equity method investment, ownership interest		50.00%
NLR Energy Logistics LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investment balance in joint venture		$ 4,329			$ 3,648
Equity method investment, ownership interest		50.00%

[1] The equity method investment in GPCC is offset by the impact of AOCI.

[2] On December 11, 2019, the company completed the sale of our 50% joint venture interest in JGP Energy Partners LLC.