Note 7 - Commitments and Contingencies - Summary of Right-of-Use Assets -10-Q (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Finance lease right-of-use assets, net | $ 141 | $ 152 | $ 177 |
| Operating lease right-of-use assets, net | 284 | 363 | 700 |
| Office Equipment [Member] | |||
| Finance lease right-of-use assets, net | 141 | 152 | 177 |
| Operating lease right-of-use assets, net | 0 | 47 | |
| Building [Member] | |||
| Operating lease right-of-use assets, net | $ 284 | $ 363 | $ 653 |