|
Note 10 - Stock Compensation (Detail) - Weighted Average Assumptions for Stock Options Fair Value Estimate
|
12 Months Ended |
|---|---|
|
Jan. 31, 2013
|
|
| Weighted average risk-free interest rate | 0.70% |
| Expected life (in years) | 5 years 6 months |
| Expected stock volatility | 121.00% |
| Expected forfeitures | 8.20% |
| X | ||||||||||
|
- Definition
No authoritative reference available. No definition available.
|
| X | ||||||||||
|
- 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|