Note 3 - Summary of Significant Accounting Policies - Schedule of Antidilutive Securities (Details) - shares |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Share-Based Payment Arrangement, Option [Member] | ||
| Antidilutive securities (in shares) | 663,453 | 161,437 |
| Restricted Stock [Member] | ||
| Antidilutive securities (in shares) | 0 | 66,666 |
| Warrant [Member] | ||
| Antidilutive securities (in shares) | 9,536,222 | 4,069,240 |
| Anson Note [Member] | ||
| Antidilutive securities (in shares) | 3,716,836 | 0 |