Inventories - Inventories (Details) (USD $)	Oct. 31, 2012	Oct. 31, 2011
Inventory Disclosure [Abstract]
Raw materials	$ 1,638,855	$ 1,009,648
Work in process	1,356,062	1,429,606
Finished goods	1,200,634	143,846
Inventories	$ 4,195,551	$ 2,583,100