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Note 10 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 20, 2024 | Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Revenue from Contract with Customer, Including Assessed Tax |  | $ 43 | $ 12 |
Purchase Agreement [Member] |  |  |  |
Equity Line of Credit Agreement, Maximum Shares Purchasable, Value | $ 10,000 |  |  |
Equity Line of Credit Agreement, Advance Notice, Percentage of Daily Value Traded Common Stock | 40.00% |  |  |
Equity Line of Credit Agreement, Advance Notice, Amount | $ 2,000 |  |  |
Equity Line of Credit Agreement, Purchase Price, Percentage of Daily VWAP | 88.00% |  |  |
Equity Line of Credit Agreement, Commitment Fee | $ 300 |  |  |
Equity Line of Credit, Deferred Offering Costs | $ 36 |  |  |
Equity Line of Credit Agreement, Percentage Threshold of Outstanding Common Stock to Issue Shares | 9.99% |  |  |
Israeli Innovation Authority (“IIA”) [Member] | Grant [Member] |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | $ 0 |  | $ 0
Israeli Innovation Authority (“IIA”) [Member] | Royalty [Member] |  |  |  |
Research Agreement, Royalty Percentage |  | 3.00% |  |
Contract with Customer, Liability |  | $ 0 |  | 0
Contract With Customer, Contingent Liability |  | $ 5,860 |  | $ 5,833

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