Note 4 - Discontinued Operations and Assets and Liabilities Held for Sale (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
|
| Impairment of Discontinued Operations | $ 519 | $ 0 | |
| Sono Motors GmbH [Member] | |||
| Impairment of Discontinued Operations | 519 | $ (0) | $ (0) |
| Disposal Group, Including Discontinued Operation, Right-of-Use Assets | $ 924 | $ 673 | |