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Note 12 - Stock-based Compensation | 3 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Share-Based Payment Arrangement [Text Block] | (12) Stock-Based Compensation We have granted equity incentives to employees and directors in the form of stock options and restricted stock awards. The total stock-based compensation expense for all equity incentives was $304 thousand and $216 thousand for the three months ended September 30, 2025, and September 30, 2024, respectively. Stock Options The Company’s stock option activity for the three months ended September 30, 2025, is as follows:
|  | Shares |  |  | Weighted Average Exercise Price |
Outstanding at June 30, 2025 |  |  | 213,113 |  |  | $ | 12.35 |
Granted |  |  | 62,750 |  |  |  | 4.73 |
Exercised |  |  | — |  |  |  | — |
Canceled or expired |  |  | (401 | ) |  |  | 10.96 |
Outstanding at September 30, 2025 |  |  | 275,462 |  |  | $ | 10.61 |
The aggregate intrinsic value was $0 for all of options exercisable and for all unvested options at September 30, 2025, because the fair value of the Company’s common stock was less than the exercise prices of these options. The table below details the Company’s stock options outstanding as of September 30, 2025:
| Range of exercise prices |  |  | Number Outstanding |  |  | Options Outstanding Weighted-Average Remaining Contractual Life (Years) |  |  | Weighted-Average Exercise Price |  |  | Number Exercisable |  |  | Options Exercisable Weighted-Average Exercise Price |
| $ | 4.73 - 9.69 |  |  |  | 117,750 |  |  |  | 9.57 |  |  | $ | 5.99 |  |  |  | 6,319 |  |  | $ | 9.42 |
| $ | 10.10 - 11.27 |  |  |  | 79,480 |  |  |  | 7.98 |  |  |  | 10.12 |  |  |  | 52,990 |  |  |  | 10.12 |
| $ | 11.51 - 19.2 |  |  |  | 76,291 |  |  |  | 7.97 |  |  |  | 14.21 |  |  |  | 46,123 |  |  |  | 15.96 |
| $ | 159 - 175.50 |  |  |  | 1,941 |  |  |  | 1.86 |  |  |  | 170.33 |  |  |  | 1,941 |  |  |  | 170.33 |
| $ | 4.73 - 175.50 |  |  |  | 275,462 |  |  |  | 8.62 |  |  |  | 10.61 |  |  |  | 107,373 |  |  | $ | 15.49 |
Compensation costs recognized related to stock option awards were $229 thousand and $155 thousand for each of the three months ended September 30, 2025, and 2024, respectively. The remaining stock-based compensation expense of $1 million related to stock options will be recognized over a weighted-average period of 2.07 years. Restricted Stock The Company’s restricted stock activity for the three months ended September 30, 2025, is as follows:
|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding at June 30, 2025 |  |  | 85,834 |  |  | $ | 14.11 |
Granted |  |  | — |  |  |  | — |
Vested |  |  | (3,334 | ) |  |  | 10.10 |
Canceled or expired |  |  | — |  |  |  | — |
Outstanding at September 30, 2025 |  |  | 82,500 |  |  | $ | 17.32 |
Stock compensation expenses related to restricted stock were $75 thousand and $26 thousand for the three months ended September 30, 2025, and 2024, respectively. The remaining stock-based compensation expense of $565 thousand related to restricted stock awards granted will be recognized over a weighted-average period of 2.14 years.

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