Note 10 - Stock Incentive Plan and Employee Stock Purchase Plan - Employee Stock Purchase Plan Valuation Assumptions (Details) - Employee Stock Purchase Plan [Member] |
12 Months Ended | |
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Jun. 30, 2026 |
Jun. 30, 2025 |
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| Risk–free interest rate, minimum | 3.62% | 4.12% |
| Risk–free interest rate, maximum | 3.83% | 4.43% |
| Dividend yield | 0.00% | 0.00% |
| Expected volatility, minimum | 47.37% | 44.02% |
| Expected volatility, maximum | 99.69% | 83.32% |
| Minimum [Member] | ||
| Expected term (Year) | 6 months | 6 months |
| Maximum [Member] | ||
| Expected term (Year) | 1 year | 1 year |
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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://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the maximum 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
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- Definition The estimated measure of the minimum 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
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- Definition The maximum 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
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- Definition The minimum 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
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- 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
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