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Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details) | 12 Months Ended
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Oct. 31, 2012 Y
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 1 | 129.14%
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 2 | 152.92%
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 3 | 131.14%
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 4 | 2.75%
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 5 | 2.75%
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 6 | 5
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 7 | 5
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 8 | 0.00%
Stock Options Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 9 | 0.00%

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