Consolidated Statements of Operations (USD $)	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Revenues	$ 164,120,375	$ 110,624,758	$ 88,304,596
Cost of Goods Sold
Cost of goods sold	155,571,814	102,786,513	85,448,407
Lower of cost or market adjustment	1,591,810	903,695	5,408,840
Total Cost of Goods Sold	157,163,624	103,690,208	90,857,247
Gross Profit (Loss)	6,956,751	6,934,550	(2,552,651)
Operating Expenses	(3,613,465)	(3,857,492)	(4,515,476)
Settlement Income		2,600,000
Operating Income (Loss)	3,343,286	5,677,058	(7,068,127)
Other Income (Expense)
Interest income	37,078	43,179	78,320
Interest expense	(2,900,470)	(4,048,634)	(4,014,448)
Write off of loan costs			(444,985)
Other income	63,123	11,918	119,806
Total other expense, net	(2,800,269)	(3,993,537)	(4,261,307)
Net Income (Loss)	543,017	1,683,521	(11,329,434)
Net Loss Attributable to Noncontrolling Interest	(27,838)
Net Income (Loss) Attributable to Heron Lake BioEnergy, LLC	$ 570,855	$ 1,683,521	$ (11,329,434)
Weighted Average Units Outstanding - Basic (in shares)	33,391,636	28,141,942	27,104,625
Weighted Average Units Outstanding - Diluted (in shares)	33,391,636	28,141,942	27,104,625
Net Income (Loss) Per Unit - Basic and Diluted (in dollars per share)	$ 0.02	$ 0.06	$ (0.42)