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Inventories (Details) (USD $) | 9 Months Ended |
--- | --- | ---
Jul. 31, 2012 | Oct. 31, 2011
Inventories [Abstract] |  |  |  |
Inventory, Raw Materials, Net of Reserves | $ 18,642,000 |  | $ 18,303,000 |
Inventory, Work in Process, Net of Reserves | 30,353,000 | [1] | 21,798,000 | [1]
Inventory, Net | 48,995,000 |  | 40,101,000 |
Completed Standard Component | 9,900,000 |  |  |
Inventory Valuation Reserves | 3,500,000 |  | 2,600,000 |
Inventory Write-down | $ 1,100,000 |  |  |
[1] | Work-in-process includes the standard components of inventory that are 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 July 31, 2012 is $9.9 million of completed standard components ready to be incorporated into power plants and deployed upon receipt of customer orders.

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