Commitments and Major Customer (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Ethanol [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Amount	$ 24,437,615	$ 32,845,845	$ 89,578,418	$ 97,281,863
Ethanol receivable	4,437,273		4,437,273
Marketing Expense	148,234	159,529	500,453	518,300
Distillers Grains [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Amount	7,785,156	7,906,409	25,636,445	22,464,052
Distillers grains receivable	1,376,047		1,376,047
Marketing Expense	$ 131,250	$ 134,117	$ 431,134	$ 377,814