Statements of Operations - USD ($)	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Condensed Statements of Operations [Abstract]
Revenues	$ 215,526,226	$ 231,254,508	$ 300,954,984
Cost of Goods Sold	198,627,132	208,654,190	237,433,629
Gross Profit	16,899,094	22,600,318	63,521,355
Operating Expenses	5,325,569	5,175,915	5,150,506
Operating Income	11,573,525	17,424,403	58,370,849
Other Income (Expense)
Other income (expense), net	99,735	38,169	242,920
Interest income	8,400	9,369	8,886
Interest expense	(453,398)	(525,108)	(485,238)
Settlement of debt premium			953,086
Total other income (expense), net	(345,263)	(477,570)	719,654
Net Income	11,228,262	16,946,833	59,090,503
Less: Net Income Attributable to Non-controlling Interest	2,505,454	3,360,083	10,316,612
Net Income Attributable to Granite Falls Energy, LLC	$ 8,722,808	$ 13,586,750	$ 48,773,891
Weighted Average Units Outstanding - Basic and Diluted	30,606	30,606	30,606
Net Income Per Unit - Basic and Diluted	$ 285.00	$ 443.92	$ 1,593.61
Distributions Per Unit - Basic and Diluted	$ 315.00	$ 1,050.00	$ 180.00