Commitments and Contingencies (Details) (One Earth Energy And Nu Gen Energy [Member])	3 Months Ended
	Apr. 30, 2014 lb bu gal T
One Earth Energy And Nu Gen Energy [Member]
Commitments and Contingencies (Details) [Line Items]
Quantity of Bushels under Forward Purchase Contract	10,400,000
Quantity of Ethanol under Sales Commitment	36,600,000
Quantity of Distillers Grains Under Sales Commitment	121,000
Quantity of Non-food Grade Corn Oil Under Sales Commitments	4,200,000
Supply Commitment Expected Period Of Delivery	through July 2014