Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Deferred Tax Assets, Tax Credit Carryforwards, Research | $ 673 | $ 543 |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 3,900 | 2,800 |
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | $ 0 | $ 0 |
| UNITED STATES | ||
| Amortization Period, Research and Development Costs (Year) | 5 years | |
| Non-US [Member] | ||
| Amortization Period, Research and Development Costs (Year) | 15 years | |
| Income Tax Jurisdiction, Domestic Federal [Member] | ||
| Operating Loss Carryforwards | $ 40,600 | |
| Operating Loss Carryforward, Limitation on Taxable Income, Percent | 80.00% | |
| Deferred Tax Assets, Tax Credit Carryforwards, Research | $ 700 | |
| Income Tax Jurisdiction, Domestic State and Local [Member] | ||
| Operating Loss Carryforwards | 37,700 | |
| Operating Loss Carryforwards, Subject to Expiration | $ 100 | |