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Equity Method Investments (Summary Of Equity Method Investments) (Details) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Investment balance in joint venture		$ 73,563	$ 68,998
Green Plains Cattle Company LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investment balance in joint venture	[1]	$ 69,745	64,161
Equity method investment, ownership interest	[1]	50.00%
Pretax accumulated other comprehensive income		$ (10,700)	(16,200)
All Others [Member]
Schedule of Equity Method Investments [Line Items]
Investment balance in joint venture		$ 3,818	$ 4,837
[1] The equity method investment in GPCC is impacted by the effect of deferred gains or losses on cattle sale contracts designated in a cash flow hedge relationship. Pre-tax accumulated other comprehensive loss for GPCC was $10.7 million as of September 30, 2020 compared to pre-tax accumulated other comprehensive loss of $16.2 million as of December 31, 2019.

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Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

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