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Nature of Business and Basis of Presentation (Tables) | 6 Months Ended
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Apr. 30, 2013
Nature of Business and Basis of Presentation [Abstract] |
Percent of customer consolidated revenues [Table Text Block] | The percent of consolidated revenues from each customer is presented below.
| Three Months Ended April 30, | Six Months Ended April 30,
| 2013 |  | 2012 | 2013 |  | 2012
POSCO Energy | 63 | % |  | 83 | % | 66 | % |  | 72 | %
Dominion Bridgeport Fuel Cell, LLC | 21 | % |  | — | % | 19 | % |  | — | %
U.S. Government (primarily the Department of Energy) | 6 | % |  | 8 | % | 6 | % |  | 6 | %
Combined | 90 | % |  | 91 | % | 91 | % |  | 78 | %

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- Definition Percent of customer consolidated revenues for the sale of products and for research and development contracts. + References No definition available. + Details
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