Note 9 - Warrants - Summary of Warrant Activity (Details) - $ / shares |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Class of Warrant or Right [Line Items] | ||
| Weighted average exercise price, Forfeited/expired | $ 1,234.41 | |
| Warrant [Member] | ||
| Class of Warrant or Right [Line Items] | ||
| Common shares issuable upon exercise, Beginning | 1,267,585 | |
| Common shares issuable upon exercise, Forfeited/expired | (128,500) | |
| Common shares issuable upon exercise, Ending | 1,139,085 | 1,267,585 |
| Common Shares Issuable upon Exercise, Exercisable | 1,139,085 | |
| Weighted average exercise price, Beginning | $ 22.4 | |
| Weighted average exercise price, Forfeited/expired | 34.5 | |
| Weighted average exercise price, Ending | 21.04 | $ 22.4 |
| Weighted average exercise price, Exercisable | $ 21.04 | |
| Weighted average remaining contractual life (years) | 3 years 4 months 24 days | 3 years 3 months 18 days |