Note 3 - Net Loss Per Share - Antidilutive Securities (Details) - shares |
12 Months Ended | |
|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Total potential dilutive shares (in shares) | 8,363,668 | 1,083,490 |
| Share-Based Payment Arrangement, Option [Member] | ||
| Total potential dilutive shares (in shares) | 89,325 | 89,449 |
| Performance Shares [Member] | ||
| Total potential dilutive shares (in shares) | 7,852,840 | 808,050 |
| Shares Reserved for Convertible Notes [Member] | ||
| Total potential dilutive shares (in shares) | 268,356 | 89,393 |
| Warrant [Member] | ||
| Total potential dilutive shares (in shares) | 153,147 | 96,598 |