Business Combination (Details) $ / shares in Units, gal in Millions	3 Months Ended											9 Months Ended	12 Months Ended
	Oct. 31, 2015 USD ($) $ / shares shares	Jul. 31, 2015 $ / shares	Apr. 30, 2015 $ / shares	Jan. 31, 2015 $ / shares	Oct. 31, 2014 USD ($) $ / shares shares	Jul. 31, 2014 $ / shares	Apr. 30, 2014 $ / shares	Jan. 31, 2014 $ / shares	Oct. 31, 2013 USD ($) $ / shares shares	Apr. 30, 2013 $ / shares	Jan. 31, 2013 $ / shares	Jul. 31, 2013 USD ($) $ / shares	Oct. 31, 2015 USD ($) governor $ / shares shares gal	Oct. 31, 2014 USD ($) $ / shares shares	Oct. 31, 2013 USD ($) $ / shares shares	Oct. 31, 2012 USD ($)
Business Acquisition [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest													$ 3,360,083	$ 10,316,612	$ 526,752
Business Acquisition, Pro Forma Revenue															349,304,556
Cash Acquired from Acquisition	$ 12,696,536				$ 27,209,010				$ 1,158,774				12,696,536	$ 27,209,010	$ 1,158,774	$ 685,828
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 | shares	30,606				30,606				30,656				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	0				$ 492,099								0	$ 492,099
Inventory, Net	12,212,025				10,725,144								12,212,025	10,725,144
Property, Plant and Equipment, Net	84,304,162				88,028,345								84,304,162	88,028,345
Goodwill	1,372,473				1,372,473								1,372,473	1,372,473
Total Assets	122,011,081				139,662,533								122,011,081	139,662,533
Accounts Payable, Current	4,643,130				8,086,119								4,643,130	8,086,119
Accrued Liabilities, Current	654,550				649,994								654,550	649,994
Stockholders' Equity Attributable to Noncontrolling Interest	$ 21,556,819				$ 22,818,076								$ 21,556,819	$ 22,818,076
Business Acquisition, Pro Forma Net Income (Loss)															$ 4,864,820
Earnings Per Share, Basic and Diluted | $ / shares	$ 39.18	$ 177.77	$ 103.89	$ 123.08	$ 357.82	$ 425.34	$ 465.58	$ 344.87	$ 159.31	$ 99.06	$ 7.23	$ 71.02	$ 443.92	$ 1,593.61	$ 327.78
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 | gal													50
Membership Units, Acquired | shares													39,080,949
Membership Units, Issued | shares	61,697,104												61,697,104
Board of Governors, Seats Appointed | governor													5
Board of Governors, Total Seats | governor													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 | $ / shares															$ 116.16
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 | shares													30,606	30,614	30,656
Weighted Average Number of Shares Outstanding, Diluted | shares													30,606	30,614	30,656
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 | shares													24,080,949
Capital Unit, Class B [Member] | Heron Lake Bioenergy [Member]
Business Acquisition [Line Items]
Membership Units, Acquired | shares													15,000,000