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Inventories (Details) (USD $)
Jul. 31, 2013
Oct. 31, 2012
Inventory, Net [Abstract]    
Raw materials $ 21,385,000 $ 17,683,000
Work in process 25,848,000 [1] 30,018,000 [1]
Inventory, Net 47,233,000 47,701,000
Completed Standard Component 1,400,000 11,300,000
Inventory Valuation Reserves $ 1,600,000 $ 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 or to service SA's. Included in Work-in-process as of July 31, 2013 and October 31, 2012 is $1.4 million and $11.3 million, respectively, of completed standard components ready to be incorporated into power plants and deployed upon receipt of customer orders or to service SA's.