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Note 9 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Net operating loss carryforwards | $ 78,632 | $ 43,148
Legal reserves | 6,563 | 0
Share-based compensation | 5,319 | 4,814
Research and development credit carryforwards | 13,480 | 13,789
Capitalized research and development expenses | 6,919 | 33,598
Other | 985 | 1,340
Total deferred tax assets | 111,898 | 96,689
Valuation allowance | (111,896) | (96,689)
Net deferred tax assets | 2 | 0
Intangibles | (2) | 0
Total deferred tax liabilities | (2) | 0
Net deferred tax asset (liability) | $ 0 | $ 0

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