Note 3 - Fair Value of Financial Instruments - Fair Values of Derivative Liabilities -10-Q (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Senior Secured Note [Member] | ||
| Beginning balance | $ 5,448 | $ 0 |
| Change in fair value | 145 | 11 |
| Cash payments on Notes Payable | (7,379) | |
| Loss on settlement of debt | 6,020 | |
| Settlement of Notes Payable via common share issuance | (2,077) | |
| Ending balance | 2,157 | 5,448 |
| Warrant Liability [Member] | ||
| Beginning balance | 7,842 | 0 |
| Change in fair value | (3,143) | (1,028) |
| Cash payments on Notes Payable | 0 | |
| Loss on settlement of debt | 0 | |
| Settlement of Notes Payable via common share issuance | 0 | |
| Ending balance | $ 4,699 | $ 7,842 |