Condensed Consolidated Statement of Changes in Members' Equity - USD ($)	Members' Equity attributable to Granite Falls Energy, LLC	Non-controlling Interest	Total
Balance - at Oct. 31, 2017	$ 83,998,672	$ 25,645,283	$ 109,643,955
Changes in Members' Equity
Member distribution	(11,779,102)	(4,311,192)	(16,090,294)
Net income (loss) attributable to non-controlling interest		473,217	473,217
Net income (loss) attributable to Granite Falls Energy, LLC	1,051,606		1,051,606
Balance - at Jan. 31, 2018	73,271,176	21,807,308	95,078,484
Balance - at Oct. 31, 2017	83,998,672	25,645,283	109,643,955
Changes in Members' Equity
Net income (loss) attributable to Granite Falls Energy, LLC			4,551,458
Balance - at Jul. 31, 2018	76,771,029	22,597,815	99,368,844
Balance - at Jan. 31, 2018	73,271,176	21,807,308	95,078,484
Changes in Members' Equity
Net income (loss) attributable to non-controlling interest		662,607	662,607
Net income (loss) attributable to Granite Falls Energy, LLC	1,497,602		1,497,602
Balance - at Apr. 30, 2018	74,768,778	22,469,915	97,238,693
Changes in Members' Equity
Net income (loss) attributable to non-controlling interest		127,900	127,900
Net income (loss) attributable to Granite Falls Energy, LLC	2,002,251		2,002,251
Balance - at Jul. 31, 2018	76,771,029	22,597,815	99,368,844
Balance - at Oct. 31, 2018	75,083,782	21,846,265	96,930,047
Changes in Members' Equity
Member distribution	(1,224,226)		(1,224,226)
Net income (loss) attributable to non-controlling interest		(967,125)	(967,125)
Net income (loss) attributable to Granite Falls Energy, LLC	(3,577,502)		(3,577,502)
Balance - at Jan. 31, 2019	70,282,054	20,879,140	91,161,194
Balance - at Oct. 31, 2018	75,083,782	21,846,265	96,930,047
Changes in Members' Equity
Net income (loss) attributable to Granite Falls Energy, LLC			(3,591,835)
Balance - at Jul. 31, 2019	70,267,721	20,489,367	90,757,088
Balance - at Jan. 31, 2019	70,282,054	20,879,140	91,161,194
Changes in Members' Equity
Net income (loss) attributable to non-controlling interest		(528,607)	(528,607)
Net income (loss) attributable to Granite Falls Energy, LLC	(1,902,649)		(1,902,649)
Balance - at Apr. 30, 2019	68,379,405	20,350,533	88,729,938
Changes in Members' Equity
Net income (loss) attributable to non-controlling interest		138,834	138,834
Net income (loss) attributable to Granite Falls Energy, LLC	1,888,316		1,888,316
Balance - at Jul. 31, 2019	$ 70,267,721	$ 20,489,367	$ 90,757,088