Note 9 - Share-based Compensation - Other Information Related to Stock Options (Details) - $ / shares |
6 Months Ended | |
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May 31, 2018 |
May 31, 2017 |
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Expected volatility | 50.00% | 50.00% |
Expected term of options (Year) | 3 years | 3 years |
Expected dividend rate | 0.00% | 0.00% |
Risk-free interest rate | 1.80% | 1.20% |
Expected forfeiture rate | 2.30% | 2.50% |
Weighted-average grant-date fair value (in dollars per share) | $ 1.35 | $ 2.14 |
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- Definition The estimated forfeiture rate over the option's term. No definition available.
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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