Quarterly Financial Data (Unaudited) (Details) - USD ($)	3 Months Ended												12 Months Ended
	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 26,015,463	$ 25,605,525	$ 22,939,711	$ 22,688,410	$ 21,812,514	$ 25,888,608	$ 24,262,577	$ 22,980,047	$ 24,079,023	$ 25,368,884	$ 23,718,623	$ 27,058,613	$ 97,249,109	$ 94,943,746	$ 100,225,143
Gross profit (loss)	(919,628)	(175,483)	(1,616,624)	(1,798,887)	(3,483,567)	(1,527,385)	2,283,325	(51,696)	770,036	1,195,537	591,457	4,191,810	(4,510,622)	(2,779,323)	6,748,840
Operating income (loss)	(1,644,443)	(1,078,065)	(2,428,181)	(2,560,218)	(4,182,000)	(2,186,352)	1,492,581	(794,645)	107,619	596,246	(162,585)	3,467,790	(7,710,907)	(5,670,416)	4,009,070
Net income (loss)	$ (1,726,481)	$ (1,248,542)	$ (2,579,501)	$ (2,719,712)	$ (4,210,806)	$ (2,330,905)	$ 1,335,482	$ (953,195)	$ 33,944	$ 503,476	$ (308,283)	$ 3,290,175	$ (8,274,236)	$ (6,159,424)	$ 3,519,312
Basic and diluted earnings per unit (in dollars per share)	$ (359.08)	$ (259.68)	$ (536.28)	$ (565.19)	$ (874.69)	$ (484.19)	$ 277.42	$ (198.02)	$ 7.05	$ 104.59	$ (64.04)	$ 672.56	$ (1,720.57)	$ (1,279.48)	$ 728.03