Commitments and Contingencies (Details) - Jul. 31, 2015 - One Earth Energy And Nu Gen Energy [Member] lb in Millions, gal in Millions, bu in Millions	T lb bu gal
Commitments and Contingencies (Details) [Line Items]
Quantity of Bushels under Forward Purchase Contract | bu	10.8
Quantity of Ethanol under Sales Commitment | gal	53.7
Quantity of Distillers Grains Under Sales Commitment | T	84,000
Quantity of Non-food Grade Corn Oil Under Sales Commitments	6.4
Supply Commitment Expected Period Of Delivery	They expect to deliver the ethanol, distillers grains and non-food grade corn oil through November 2015.