Weighted Average Assumptions to Value Investor Warrants (Detail) - Investor Warrants |
12 Months Ended |
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May 31, 2015
$ / shares
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Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | |
Expected dividend yield | 0.00% |
Stock price volatility | 88.79% |
Expected term | 5 years |
Minimum | |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | |
Risk-free interest rate | 1.46% |
Grant-date fair value | $ 0.52 |
Maximum | |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | |
Risk-free interest rate | 1.58% |
Grant-date fair value | $ 0.76 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Agreed upon price for the exchange of the underlying asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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