Note 10 - Stockholder's Equity - Summary of Weighted-Average Grant-Date Fair Value of Equity Options (Details) - $ / shares |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Number of options granted (in shares) | 0 | 1,500 |
| Weighted-average exercise price per share (in dollars per share) | $ 0 | $ 8.1 |
| Weighted-average grant date fair value per share (in dollars per share) | $ 0 | |
| Restricted Stock Units (RSUs) [Member] | ||
| Granted (in shares) | 17,500 | 5,000 |
| Weighted-average grant date fair value per share, shares (in dollars per share) | $ 5.5 | $ 1.1 |
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- 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://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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