Inventory Inventory (Details) (USD $)	Oct. 31, 2012	Oct. 31, 2011
Inventory, Net	$ 12,013,169	$ 8,615,411
Raw Materials [Member]
Inventory, Net	8,977,820	5,323,615
Replacement Parts [Member]
Inventory, Net	682,896	584,011
Work In Process [Member]
Inventory, Net	1,183,188	1,150,239
Finished Goods [Member]
Inventory, Net	$ 1,169,265	$ 1,557,546