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FAIR VALUE MEASUREMENTS (Detail) - The hierarchy for our financial liabilities measured at fair value on a recurring basis: (USD $)
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Apr. 30, 2013
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| Derivative liability | $ 970,000 |
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Fair Value, Inputs, Level 1 [Member]
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| Derivative liability | |
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Fair Value, Inputs, Level 2 [Member]
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| Derivative liability | |
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Fair Value, Inputs, Level 3 [Member]
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| Derivative liability | $ 970,000 |