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Business Acquisitions (Details 2) (Green Plains Grain Company, USD $)
In Thousands, unless otherwise specified
9 Months Ended 9 Months Ended
Sep. 30, 2013
Dec. 03, 2012
Other Intangible Assets
Sep. 30, 2013
Minimum
Other Intangible Assets
Sep. 30, 2013
Maximum
Other Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]        
Intangible assets acquired   $ 4,600    
Useful Life     3 years 5 years
Weighted average useful life 4 years [1]      
[1] weighted average number of years