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Note 12 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 27 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Mar. 31, 2026 | Dec. 31, 2025 | Dec. 31, 2024
Revenue from Contract with Customer, Including Assessed Tax | $ 485 | $ 43 |  |  |
Contract with Customer, Liability | $ 208 | $ 13 | $ 208 | $ 249 | $ 13
Israeli Innovation Authority (“IIA”) [Member] | Grant [Member] |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  | $ 0 |  |
Israeli Innovation Authority (“IIA”) [Member] | Royalty [Member] |  |  |  |  |
Research Agreement, Royalty Percentage | 3.00% |  | 3.00% |  |
Contract with Customer, Liability | $ 0 |  | $ 0 | 0 |
Contract With Customer, Contingent Liability | $ 5,861 |  | $ 5,861 | $ 5,835 |

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