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Inventories (Details) (USD $) | Apr. 30, 2013 | Oct. 31, 2012
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Inventories [Abstract] |  |  |  |
Raw materials | $ 20,385,000 |  | $ 17,683,000 |
Work in process | 29,486,000 | [1] | 30,018,000 | [1]
Inventory, Net | 49,871,000 |  | 47,701,000 |
Completed Standard Component | 2,900,000 |  | 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. Included in Work-in-process as of April 30, 2013 and October 31, 2012 is $2.9 million and $11.3 million, respectively, of completed standard components ready to be incorporated into power plants and deployed upon receipt of customer orders.

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