Commitments and Contingencies (Details) (One Earth Energy And Nu Gen Energy [Member])	3 Months Ended
	Jul. 31, 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	7,300,000
Quantity of Ethanol under Sales Commitment	36,500,000
Quantity of Distillers Grains Under Sales Commitment	101,000
Quantity of Non-food Grade Corn Oil Under Sales Commitments	7,100,000
Supply Commitment Expected Period Of Delivery	They expect to deliver a majority of the ethanol, distillers grains and non-food grade corn oil through October 2014.