Document and Entity Information
Document and Entity Information - USD ($) | 12 Months Ended | ||
Oct. 31, 2021 | Feb. 28, 2022 | Apr. 30, 2021 | |
Document and Entity Information [Abstract] | |||
Document Type | 10-K/A | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Document Period End Date | Oct. 31, 2021 | ||
Entity File Number | 000-51277 | ||
Entity Registrant Name | GRANITE FALLS ENERGY, LLC | ||
Entity Incorporation, State or Country Code | MN | ||
Entity Tax Identification Number | 41-1997390 | ||
Entity Address State Or Province | MN | ||
Entity Address, Address Line One | 15045 Highway 23 SE | ||
Entity Address, City or Town | Granite Falls | ||
Entity Address, Postal Zip Code | 56241-0216 | ||
City Area Code | 320 | ||
Local Phone Number | 564-3100 | ||
Title of 12(g) Security | Membership Units | ||
Entity Well-known Seasoned Issuer | No | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Filer Category | Non-accelerated Filer | ||
ICFR Auditor Attestation Flag | false | ||
Entity Small Business | true | ||
Entity Emerging Growth Company | false | ||
Entity Shell Company | false | ||
Entity Public Float | $ 27,079,650 | ||
Entity Common Stock, Shares Outstanding | 30,606 | ||
Entity Central Index Key | 0001181749 | ||
Current Fiscal Year End Date | --10-31 | ||
Document Fiscal Year Focus | 2021 | ||
Document Fiscal Period Focus | FY | ||
Amendment Flag | false |