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Note 4 - Summary of Significant Accounting Policies - Schedule of Future Operating Lease Payments (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Nine months ending December 31, 2026 | $ 38 |
Total undiscounted lease payments | 38 |
Less: imputed interest | (1) |
Total operating lease liabilities as of March 31, 2026 | 37 |
Operating lease liabilities | 37 | $ 49
Operating lease liabilities-Non current | $ 0 |

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