Quarterly Financial Data (Unaudited) Quarterly Financial Data (Details) (USD $)	3 Months Ended												12 Months Ended
	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	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, 2013	Oct. 31, 2012	Oct. 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 80,079,134	$ 48,884,076	$ 48,020,602	$ 47,117,122	$ 49,955,382	$ 42,435,763	$ 39,025,122	$ 43,745,776	$ 45,852,470	$ 45,414,923	$ 34,537,750	$ 30,716,346	$ 224,100,934	$ 175,162,043	$ 156,521,489
Gross Profit	6,581,018	2,710,179	3,629,972	832,144	(1,946,091)	54,694	657,416	3,687,950	4,861,424	2,068,381	3,704,535	3,533,733	14,023,313	2,453,969	14,168,073
Operating Income (Loss)	5,521,116	2,197,158	3,047,007	269,449	(2,489,589)	(597,187)	66,935	3,024,214	4,393,545	1,550,481	3,245,729	2,975,612	11,034,730	4,373	12,165,367
Net Income (Loss) Available to Members	$ 4,874,950	$ 2,173,701	$ 3,031,943	$ 221,427	$ (2,432,510)	$ (565,637)	$ 116,466	$ 3,042,288	$ 4,423,268	$ 1,586,882	$ 3,270,110	$ 3,011,596
Earnings Per Share, Diluted	$ 159.31	$ 71.02	$ 99.06	$ 7.23	$ (79.36)	$ (18.49)	$ 3.81	$ 99.29	$ 144.29	$ 51.76	$ 106.67	$ 98.24