Note 12 - Stock-based Compensation - Stock Based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Stock based compensation | $ 207 | $ 285 | $ 457 | $ 660 |
| Selling and Marketing Expense [Member] | ||||
| Stock based compensation | 11 | 6 | 33 | 58 |
| Research and Development Expense [Member] | ||||
| Stock based compensation | 4 | 81 | 24 | 171 |
| General and Administrative Expense [Member] | ||||
| Stock based compensation | $ 192 | $ 198 | $ 400 | $ 431 |
| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|