Business Acquisition (Details Textual) (USD $)						3 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Sep. 30, 2013 Mile Rail	Aug. 05, 2013 Mile Rail	Sep. 30, 2013 Green Plains Grain Company	Dec. 03, 2012 Green Plains Grain Company bu T	Jan. 31, 2012 New Eezy Gro Inc	May 01, 2012 The Andersons Denison Ethanol LLC [Member] gal bu	Oct. 30, 2012 Mt Pulaski
Business Acquisition [Line Items]
Total Purchase Price				$ 7,804,000			$ 120,232,000			$ 10,683,000
number of locations					2
Payable to acquiree							3,300,000
Grain storage capacity							32,000,000
Nutrient storage capacity							12,000
Property, plant and equipment decrease						135,000
Intangible asset decrease						2,600,000
Other liabilities and equity increase						235,000
Goodwill increase						3,000,000
Goodwill	58,554,000	51,418,000	19,226,000	4,167,000			33,175,000			1,985,000
Percentage of stock purchased								100.00%
Purchase price								16,800,000
Goodwill								6,681,000
Purchase price								16,777,000	77,400,000
Capacity of ethanol facility									55,000,000
Capacity of grain terminal									2,700,000
Controllling interest percentage									85.00%
Fair value of noncontrolling interest									$ 6,100,000