Note 9 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans - Stock Option Activity Summary (Details) - $ / shares shares in Thousands |
12 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Outstanding (in shares) | 156,628 | 38,166 |
| Outstanding, weighted average grant date fair value (in dollars per share) | $ 14.18 | $ 27.34 |
| Granted (in shares) | 102,260 | 131,840 |
| Granted, weighted average grant date fair value (in dollars per share) | $ 9.43 | $ 10.01 |
| Exercised (in shares) | 0 | 0 |
| Exercised, weighted average grant date fair value (in dollars per share) | $ 0 | $ 0 |
| Canceled or expired (in shares) | (45,775) | (13,378) |
| Canceled or expired, weighted average grant date fair value (in dollars per share) | $ 12.1 | $ 10.7 |
| Outstanding (in shares) | 213,113 | 156,628 |
| Outstanding, weighted average grant date fair value (in dollars per share) | $ 12.35 | $ 14.18 |
| X | ||||||||||
- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. 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/2003/role/disclosureRef
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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 price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. 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 Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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