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Inventories
9 Months Ended
Jul. 31, 2011
Inventories [Abstract]  
Inventories
Note 5. Inventories
The components of inventory at July 31, 2011 and October 31, 2010 consisted of the following:
                 
    July 31,     October 31,  
    2011     2010  
 
               
Raw materials
  $ 18,376     $ 15,509  
Work-in-process
    22,210       22,786  
 
           
Gross Inventory
  $ 40,586     $ 38,295  
Less amount to reduce certain inventories to lower of cost or market
    (1,854 )     (4,891 )
 
           
Net inventory
  $ 38,732     $ 33,404  
 
           
Raw materials consist mainly of various nickel powders and steels, various other components used in producing cell stacks and purchased components for balance of plant. Work-in-process inventory is comprised of material, labor, and overhead costs incurred to build fuel cell stacks, which are subcomponents of a power plant. Work in process also includes costs related to power plants in inventory which have not yet been dedicated to a particular commercial customer contract. The above inventory amounts include a lower of cost or market adjustment to write down the carrying value of certain legacy inventory to its estimated market value.