Note 12 - Equity - Share-based Compensation Expense (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Aug. 12, 2024 |
Mar. 31, 2025 |
Mar. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Share-based compensation expense | $ 117 | $ 2,594,000 | $ 295,000 | ||
| Share-Based Payment Arrangement, Option [Member] | |||||
| Share-based compensation expense | 86,000 | $ 59,000 | 1,574,000 | 295,000 | |
| Restricted Stock Units (RSUs) [Member] | |||||
| Share-based compensation expense | $ 410,000 | $ 1 | $ 0 | 410,000 | 0 |
| Series D Warrants [Member] | |||||
| Share-based compensation expense | $ 610,000 | $ 0 | |||