Note 3 - Net Income (Loss) Per Common Share - Basic and Diluted (Details Textual) - shares |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Series C Preferred Stock [Member] | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 4,063 | 4,063 | 4,063 | 4,063 |
| Share-Based Payment Arrangement, Option [Member] | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 26,662,500 | 27,862,500 | 26,662,500 | 27,862,500 |
| Restricted Stock Units (RSUs) [Member] | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 3,000,000 | 5,250,000 | 3,000,000 | 5,250,000 |