Quarterly Financial Data (Unaudited) Quarterly Financial Data (Details) (USD $)	3 Months Ended												12 Months Ended
	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2010	Jul. 31, 2010	Apr. 30, 2010	Jan. 31, 2010	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 49,955,382	$ 42,435,763	$ 39,025,122	$ 43,745,776	$ 45,852,470	$ 45,414,923	$ 34,537,750	$ 30,716,346	$ 25,994,509	$ 23,632,382	$ 22,237,999	$ 23,424,562	$ 175,162,043	$ 156,521,489	$ 95,289,452
Gross Profit	(1,946,091)	54,694	657,416	3,687,950	4,861,424	2,068,381	3,704,535	3,533,733	4,679,335	1,386,818	1,730,098	2,346,940	2,453,969	14,168,073	10,143,191
Operating Income (Loss)	(2,489,589)	(597,187)	66,935	3,024,214	4,393,545	1,550,481	3,245,729	2,975,612	4,160,693	919,429	1,267,328	1,837,999	4,373	12,165,367	8,185,449
Net Income (Loss) Available to Members	$ (2,432,510)	$ (565,637)	$ 116,466	$ 3,042,288	$ 4,423,268	$ 1,586,882	$ 3,270,110	$ 3,011,596	$ 4,197,870	$ 939,019	$ 1,298,247	$ 1,927,176
Earnings Per Share, Diluted	$ (79.36)	$ (18.49)	$ 3.81	$ 99.29	$ 144.29	$ 51.76	$ 106.67	$ 98.24	$ 136.94	$ 30.63	$ 42.35	$ 62.86