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Note 13 - Other Financial Statement Information (Tables) | 3 Months Ended
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Mar. 31, 2026
Notes Tables |
Schedule of Inventory, Current [Table Text Block] |
|  | March 31, 2026 |  | December 31, 2025
Raw materials |  | $ | 353 |  |  | $ | 374 |
Work in process |  |  | 14 |  |  |  | 8 |
Finished goods |  |  | — |  |  |  | — |
Total gross inventory |  |  | 367 |  |  |  | 382 |
Reserve for excess and obsolete inventory |  |  | (89 | ) |  |  | (85 | )
Inventories, net |  | $ | 278 |  |  | $ | 297 |
Intangible Asset, Finite-Lived [Table Text Block] |
|  | March 31, 2026 |  | December 31, 2025
Intellectual property |  | $ | 214 |  |  | $ | 214 |
Gross intangible assets |  |  | 214 |  |  |  | 214 |
Less: Accumulated amortization |  |  | (205 | ) |  |  | (199 | )
Intangible assets, net |  | $ | 9 |  |  | $ | 15 |

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