Commitments and Major Customer (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Ethanol [Member]	Jun. 30, 2013 Ethanol [Member]	Jun. 30, 2013 Ethanol [Member]	Mar. 31, 2012 Ethanol [Member]	Jun. 30, 2013 Ethanol [Member]	Jun. 30, 2012 Ethanol [Member]	Jun. 30, 2013 Distillers' Grains [Member]	Mar. 31, 2012 Distillers' Grains [Member]	Jun. 30, 2013 Distillers' Grains [Member]	Jun. 30, 2012 Distillers' Grains [Member]
Revenue, Major Customer [Line Items]
Marketing expense					$ 154,242	$ 334,828	$ 0	$ 148,234	$ 138,262	$ 500,453	$ 158,790	$ 131,250	$ 534,464	$ 431,134
Revenues	40,894,385	33,111,549	135,781,429	118,452,914	30,669,126	64,796,477	0	24,437,615	34,012,975	89,578,418	9,373,498	7,785,156	34,171,509	25,636,445
Ethanol receivable					3,383,773	3,383,773
Distillers grains receivable											$ 1,676,923		$ 1,676,923