Business Acquisition (Details 1) (USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended	0 Months Ended			12 Months Ended	0 Months Ended
	Oct. 07, 2014	Dec. 31, 2014	Dec. 03, 2012	May 01, 2012		Dec. 31, 2013	Jan. 31, 2012
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount	$ 9,250
Minimum
Intangible assets acquisition
Intangible assets estimated useful life		5 years
Maximum
Intangible assets acquisition
Intangible assets estimated useful life		10 years
Supplier relationships
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount	4,620
Customer relationships
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount	3,450
Trade name
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount	860
Non-compete agreement
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount	320
Auburn Bean and Grain
Intangible assets acquisition
Intangible assets estimated useful life	10 years
Auburn Bean and Grain | Supplier relationships
Intangible assets acquisition
Intangible assets estimated useful life	10 years
Auburn Bean and Grain | Customer relationships
Intangible assets acquisition
Intangible assets estimated useful life	10 years
Auburn Bean and Grain | Trade name
Intangible assets acquisition
Intangible assets estimated useful life	10 years
Auburn Bean and Grain | Non-compete agreement | Minimum
Intangible assets acquisition
Intangible assets estimated useful life	1 year
Auburn Bean and Grain | Non-compete agreement | Maximum
Intangible assets acquisition
Intangible assets estimated useful life	5 years
Green Plains Grain Company
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount			4,600
Weighted average useful life			4 years
Green Plains Grain Company | Supplier relationships
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount			4,600
Green Plains Grain Company | Supplier relationships | Minimum
Intangible assets acquisition
Intangible assets estimated useful life			3 years
Green Plains Grain Company | Supplier relationships | Maximum
Intangible assets acquisition
Intangible assets estimated useful life			5 years
Amaizing Energy Denison LLC
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount				2,373
Weighted average useful life				3 years	[1]
Amaizing Energy Denison LLC | Lease intangible
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount				2,123
Amaizing Energy Denison LLC | Lease intangible | Minimum
Intangible assets acquisition
Intangible assets estimated useful life				10 months
Amaizing Energy Denison LLC | Lease intangible | Maximum
Intangible assets acquisition
Intangible assets estimated useful life				5 years
Amaizing Energy Denison LLC | Non-compete agreement
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount				250
Intangible assets estimated useful life						2 years
New Eezy Gro Inc
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount							9,600
Weighted average useful life							9 years	[1]
New Eezy Gro Inc | Customer list
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount							5,500
Intangible assets estimated useful life						10 years
New Eezy Gro Inc | Non-compete agreement
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount							800
Intangible assets estimated useful life						7 years
New Eezy Gro Inc | Trademarks and patents
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount							1,200
Intangible assets estimated useful life						10 years
New Eezy Gro Inc | Technology
Intangible assets acquisition
Acquired Finite-lived Intangible Asset, Amount							$ 2,100
Intangible assets estimated useful life						5 years

[1] weighted average number of years