Business Combination (Details) (USD $)	3 Months Ended							9 Months Ended	12 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Jul. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Business Acquisition [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest									$ 10,316,612	$ 526,752	$ 0
Business Acquisition, Pro Forma Revenue									349,304,556	343,821,978	320,641,864
Cash Acquired from Acquisition	27,209,010				1,158,774				27,209,010	1,158,774	685,828	13,064,560
Business Acquisition, Cost of Acquired Entity, Cash Paid									8,000,000
Equity Method Investment, Ownership Percentage								12.82%
Business Acquisition, Cost of Acquired Entity, Purchase Price	17,024,500								17,024,500
Membership Units, Issued	30,606				30,606				30,606	30,606	30,656
Business Acquisition, Purchase Price Allocation, Notes Payable and Long-term Debt	4,024,500								4,024,500
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred									5,000,000
Restricted Cash and Cash Equivalents	492,099				393,750				492,099	393,750
Inventory, Net	10,725,144				12,370,277				10,725,144	12,370,277
Property, Plant and Equipment, Net	88,028,345				88,808,855				88,028,345	88,808,855
Goodwill	1,372,473				1,372,473				1,372,473	1,372,473
Total Assets	139,662,533				112,673,222				139,662,533	112,673,222
Accounts Payable, Current	8,086,119				3,058,633				8,086,119	3,058,633
Accrued Liabilities, Current	649,994				696,858				649,994	696,858
Stockholders' Equity Attributable to Noncontrolling Interest	22,818,076				8,480,657				22,818,076	8,480,657
Business Acquisition, Pro Forma Net Income (Loss)									4,864,820	(31,794,779)	13,612,987
Earnings Per Share, Basic and Diluted	$ 357.82	$ 425.34	$ 465.58	$ 344.87	$ 159.31	$ 99.06	$ 7.23	$ 71.02	$ 1,593.61	$ 327.78	$ 5.25
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net								17,024,500
Project Viking, LLC [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage								100.00%
Heron Lake Bioenergy [Member]
Business Acquisition [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest									527,000
Debt Instrument, Fair Value Disclosure	36,500,000								36,500,000
Debt premium	2,300,000								2,300,000
Cash Acquired from Acquisition	1,022,764								1,022,764
Equity Method Investment, Ownership Percentage	63.30%								63.30%
Plant production capacity									50,000,000
Membership Units, Acquired									39,080,949
Membership Units, Issued	61,697,104								61,697,104
Board of Governors, Seats Appointed									5
Board of Governors, Total Seats									9
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	36.66%								36.66%
Restricted Cash and Cash Equivalents	510,955								510,955
Accounts Receivable, Net, Current	3,107,121								3,107,121
Inventory, Net	2,303,157								2,303,157
Prepaid Expense, Current	1,107,025								1,107,025
Property, Plant and Equipment, Net	51,625,774								51,625,774
Other Assets, Noncurrent	924,252								924,252
Goodwill	1,372,473								1,372,473
Total Assets	61,973,521								61,973,521
Accounts Payable, Current	(936,893)								(936,893)
Accrued Liabilities, Current	(399,623)								(399,623)
Notes Payable	(36,452,764)								(36,452,764)
Stockholders' Equity Attributable to Noncontrolling Interest	(7,159,741)								(7,159,741)
Business Acquisition, Pro Forma Net Income (Loss)									712,289	(20,702,684)	361,351
Earnings Per Share, Basic and Diluted									$ 116.16	$ (617.00)	$ 412.75
Management Services Agreement, Initial Term									three
Management Services Agreement, Monthly Fee, Year 1									35,000
Management Serices Agreement, Monthly Fee Percent of Salaries, Year 2									50.00%
Management Services Agreement, Termination Notice									90-days
Goodwill, Allocation Adjustment									273,000
Business Combination, Separately Recognized Transactions, Revenues and Gains Recognized									38,560,522
Business Combinations, Separately Recognized TRansactions, net earnings recognized									1,305,044
Weighted Average Number of Shares Outstanding, Basic									30,606	30,656	30,614
Weighted Average Number of Shares Outstanding, Diluted									30,606	30,656	30,614
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 17,024,500								$ 17,024,500
Capital Unit, Class A [Member] | Heron Lake Bioenergy [Member]
Business Acquisition [Line Items]
Membership Units, Acquired									24,080,949
Capital Unit, Class B [Member] | Heron Lake Bioenergy [Member]
Business Acquisition [Line Items]
Membership Units, Acquired									15,000,000