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Note 7 - Stockholders' Equity (Tables) | 12 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] |
|  | Shares |  |  | Weighted Average Exercise |  |  | Aggregate Fair Market Value at Issuance |  |  | Weighted Average Remaining Contractual Life |
|  | (In thousands) |  |  | Price |  |  | (In thousands) |  |  | (in years) |
Outstanding at June 30, 2023 |  |  | 80 |  |  | $ | 72.10 |  |  | $ | 3,747 |  |  |  | 2.60 |
Issued |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Canceled or expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Outstanding at June 30, 2024 |  |  | 80 |  |  | $ | 72.10 |  |  | $ | 3,747 |  |  |  | 1.60 |
Issued |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Canceled or expired |  |  | (3 | ) |  |  | 154 |  |  |  | (194 | ) |  |  | - |
Outstanding at June 30, 2025 |  |  | 77 |  |  | $ | 69.04 |  |  | $ | 3,553 |  |  |  | 0.63 |
|  |  |  |  |  |  |  | Number of Shares Underlying |
|  |  |  |  |  |  |  | Warrants |
|  |  |  |  |  |  |  | (In thousands) |
|  |  |  |  |  |  |  | For the period ended June 30, |
Issue Date |  | Classification | Exercise Price |  | Expiration Date |  | 2025 |  |  | 2024 |
March 26, 2020 |  | Equity | $ | 187.50 |  | March 25, 2025 |  |  | - |  |  |  | 1 |
March 30, 2020 |  | Equity | $ | 140.63 |  | March 27, 2025 |  |  | - |  |  |  | 2 |
October 23, 2020 |  | Equity | $ | 86.25 |  | October 21, 2025 |  |  | 15 |  |  |  | 15 |
October 28, 2020 |  | Equity | $ | 80.63 |  | October 28, 2025 |  |  | 6 |  |  |  | 6 |
February 16, 2021 |  | Equity | $ | 121.88 |  | February 11, 2026 |  |  | 6 |  |  |  | 6 |
April 12, 2021 |  | Equity | $ | 56.25 |  | April 7, 2026 |  |  | 50 |  |  |  | 50 |
Total Outstanding |  |  |  |  |  |  | 77 |  |  |  | 80 |

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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
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