Inventories (Details) (USD $)	Jan. 31, 2013		Oct. 31, 2012
Inventories [Abstract]
Inventory, Raw Materials, Net of Reserves	$ 20,022,000		$ 17,683,000
Inventory, Work in Process, Net of Reserves	27,026,000	[1]	30,018,000	[1]
Inventory, Net	47,048,000		47,701,000
Completed Standard Component	6,400,000		11,300,000
Inventory Valuation Reserves	$ 1,800,000		$ 2,400,000

[1] Work-in-process includes the standard components of inventory used to build the typical modules or stack components that are intended to be used in future power plant orders. Included in Work-in-process as of January 31, 2013 and October 31, 2012 is $6.4 million and $11.3 million, respectively, of completed standard components ready to be incorporated into power plants and deployed upon receipt of customer orders.