Note 12 - Stock-based Compensation - Stock Based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
|
| Stock based compensation | $ 234 | $ 406 | $ 691 | $ 1,066 |
| Selling and Marketing Expense [Member] | ||||
| Stock based compensation | 24 | 22 | 57 | 80 |
| Research and Development Expense [Member] | ||||
| Stock based compensation | 20 | 27 | 44 | 198 |
| General and Administrative Expense [Member] | ||||
| Stock based compensation | $ 190 | $ 357 | $ 590 | $ 788 |
| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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