Note 15 - Stock-based Compensation - Valuation Assumptions (Details) - Share-Based Payment Arrangement, Option [Member] |
3 Months Ended |
|---|---|
|
Feb. 28, 2023
$ / shares
| |
| Expected dividends | 0.00% |
| Expected life (in years) (Year) | 6 years 6 months |
| Minimum [Member] | |
| Risk free rate | 3.63% |
| Expected volatility | 76.10% |
| Market price of the Company’s common stock on date of grant (in dollars per share) | $ 6.35 |
| Maximum [Member] | |
| Risk free rate | 3.79% |
| Expected volatility | 77.00% |
| Market price of the Company’s common stock on date of grant (in dollars per share) | $ 6.37 |
| X | ||||||||||
- Definition Represents the market price of the Company's common stock on date of grant. No definition available.
|
| X | ||||||||||
- 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://www.xbrl.org/2003/role/disclosureRef
|
| 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/disclosureRef
|
| 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/disclosureRef
|
| X | ||||||||||
- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|