Note 2 - Loss Per Share - Schedule of Securities Not Considered in Calculation of Diluted Weighted Average Shares (Details) - shares |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Total potential dilutive securities | 13,977,054 | 10,601,285 |
| Common Stock Warrants [Member] | ||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Total potential dilutive securities | 338,715 | 415,779 |
| Common Stock Options [Member] | ||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Total potential dilutive securities | 13,638,339 | 10,185,506 |