Commitments and Contingencies Narrative (Details) (USD $)	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Selling and Marketing Expense	$ 743,000	$ 1,006,000	$ 825,000
Fees and Commissions	650,000	460,000	210,000
Natural Gas [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Future Commitment, Dollar	719,000	1,797,600
Revenue Concentration, Future Commitment	30.00%
Future Commitment, Pipeline	9.5
Future Commitment, DT	1,400,000
Corn Contracts [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Inventory Dollars, Outside Storage	6,511,000
Accounts Payable	1,996,000	2,517,000
Commitments and Contingencies	1,000,000
Inventory, Outside storage	885,000
Purchases For Inventory	148,289,000	123,676,000	63,089,000
Ethanol Contracts [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Future Commitment, Dollar	8,747,000	15,667,000
Revenue Concentration, Future Commitment	75.00%
Distillers Grains [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Future Commitment, Dollar	$ 1,773,000	$ 4,624,000
Revenue Concentration, Future Commitment	65.00%
Initial Length [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Written Notice	P1Y
Renewal Notice [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Written Notice	90 days
Distillers Grains [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Written Notice	90
Contract, Initial Length	P1Y
Natural Gas [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Written Notice	P12M
Contract, Initial Length	P1Y