Note 9 - Temporary Equity and Stockholders' Deficit - Reserved Common Stock -10-Q (Details) - shares |
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Reserved common stock (in shares) | 25,710,280 | 25,710,280 | 9,780,704 |
| Common Stock from Options Issued and Outstanding [Member] | |||
| Reserved common stock (in shares) | 7,570,646 | 7,556,434 | 7,210,742 |
| Common Stock Issued from Issued Warrants [Member] | |||
| Reserved common stock (in shares) | 7,710,280 | 7,710,280 | 0 |
| Common Stock Available for Future Grants [Member] | |||
| Reserved common stock (in shares) | 10,429,354 | 10,443,566 | 1,183,618 |