Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Jul. 31, 2016	Jul. 31, 2015
Condensed Statements of Operations [Abstract]
Revenues	$ 58,018,553	$ 58,671,723	$ 159,994,605	$ 176,431,334
Cost of Goods Sold	51,716,678	49,875,833	149,986,152	156,462,251
Gross Profit	6,301,875	8,795,890	10,008,453	19,969,083
Operating Expenses	1,284,016	1,301,446	4,174,358	4,096,079
Operating Income	5,017,859	7,494,444	5,834,095	15,873,004
Other Income (Expense)
Other income (expense), net	2,962	(2,472)	101,769	39,740
Interest income	1,848	2,336	6,384	6,929
Interest expense	(152,403)	(182,107)	(333,045)	(361,602)
Total other expense, net	(147,593)	(182,243)	(224,892)	(314,933)
Net Income	4,870,266	7,312,201	5,609,203	15,558,071
Less: Net Income Attributable to Non-controlling Interest	(1,377,444)	(1,871,438)	(1,405,337)	(3,170,575)
Net Income Attributable to Granite Falls Energy, LLC	$ 3,492,822	$ 5,440,763	$ 4,203,866	$ 12,387,496
Weighted Average Units Outstanding - Basic and Diluted	30,606	30,606	30,606	30,606
Net Income Per Unit - Basic and Diluted	$ 114.12	$ 177.77	$ 137.35	$ 404.74
Distributions Per Unit - Basic and Diluted			$ 315.00	$ 1,050.00