Note 2 - Loss Per Share - Schedule of Securities Not Considered in Calculation of Diluted Weighted Average Shares (Details) - shares shares in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Total potential dilutive securities | 10,601,285 | 7,350,186 |
| Common Stock Warrants [Member] | ||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Total potential dilutive securities | 415,779 | 416,164 |
| Common Stock Options [Member] | ||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Total potential dilutive securities | 10,185,506 | 6,934,022 |