Note 10 - Stockholders' Equity - Summary of Stock Option Activity (Details) |
3 Months Ended |
|---|---|
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Jun. 30, 2026
$ / shares
shares
| |
| Outstanding, option (in shares) | shares | 12,500 |
| Outstanding, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 10.8 |
| Granted, option (in shares) | shares | 0 |
| Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 0 |
| Exercised, option (in shares) | shares | 0 |
| Exercised, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 0 |
| Forfeited or expired, option (in shares) | shares | 0 |
| Forfeited or expired, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 0 |
| Outstanding, option (in shares) | shares | 12,500 |
| Outstanding, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 10.8 |
| Exercisable, option (in shares) | shares | 12,500 |
| Exercisable, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 10.8 |
| X | ||||||||||
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Weighted average price of options that were either forfeited or expired. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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 Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. 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 | ||||||||||
- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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