Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended
Jan. 31, 2020	Jan. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 27,184,024	$ 22,688,410
Ethanol Sales
Disaggregation of Revenue [Line Items]
Revenues	21,355,975	16,949,206
Modified Distillers Grains Sales
Disaggregation of Revenue [Line Items]
Revenues	1,293,345	1,157,453
Dried Distillers Grains Sales
Disaggregation of Revenue [Line Items]
Revenues	3,683,362	3,850,366
Corn Oil Sales
Disaggregation of Revenue [Line Items]
Revenues	$ 851,342	$ 731,385

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration