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Schedule of Stockholders' Equity Note, Warrants or Rights, Weighted Average Remaining Contractual Term, Outstanding and Exercisable (Details) | 12 Months Ended
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Nov. 30, 2012
Stock Purchase Warrants Schedule Of Stockholders' Equity Note, Warrants Or Rights,weighted Average Remaining Contractual Term, Outstanding And Exercisable 1 | 2.8
Stock Purchase Warrants Schedule Of Stockholders' Equity Note, Warrants Or Rights,weighted Average Remaining Contractual Term, Outstanding And Exercisable 2 | 3.9
Stock Purchase Warrants Schedule Of Stockholders' Equity Note, Warrants Or Rights,weighted Average Remaining Contractual Term, Outstanding And Exercisable 3 | 2.8
Stock Purchase Warrants Schedule Of Stockholders' Equity Note, Warrants Or Rights,weighted Average Remaining Contractual Term, Outstanding And Exercisable 4 | 3.9

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