Note 12 - Basic and Diluted Net Loss Per Share - Anti-dilutive Securities (Details) - shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Anti-dilutive securities (in shares) | 1,781,454 | 753,952 |
| Warrant [Member] | ||
| Anti-dilutive securities (in shares) | 921,381 | 335,214 |
| Share-Based Payment Arrangement, Option [Member] | ||
| Anti-dilutive securities (in shares) | 476,741 | 134,333 |
| Restricted Stock Units (RSUs) [Member] | ||
| Anti-dilutive securities (in shares) | 10,000 | |
| Deferred Stock Units [Member] | ||
| Anti-dilutive securities (in shares) | 33,332 | |
| Stock Issuable Pursuant to Inducement Agreement [Member] | ||
| Anti-dilutive securities (in shares) | 340,000 | |