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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Impairment, Long-Lived Asset, Held-for-Use | $ 87 | $ 0 | $ 676 | $ 0 |
Tangible Asset Impairment Charges | 3 |  | 33 |  | $ (0)
Operating Lease, Impairment Loss | $ 84 |  | $ 643 |  |
Equipment [Member] | Minimum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  | 5 years |  |
Equipment [Member] | Maximum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life | 7 years |  | 7 years |  |
Computer Equipment and Software [Member] | Minimum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  | 3 years |  |
Computer Equipment and Software [Member] | Maximum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  | 5 years |  |
Furniture and Fixtures [Member] | Minimum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  | 5 years |  |
Furniture and Fixtures [Member] | Maximum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life | 7 years |  | 7 years |  |

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