Note 12 - Stock-based Compensation - Schedule of Recognized Period Costs 2 (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Stock-based compensation | $ 1,621 | $ 2,065 | $ 3,510 | $ 4,518 |
| Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense | ||||
| Stock-based compensation | 700 | 915 | 1,501 | 1,951 |
| Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense | ||||
| Stock-based compensation | $ 921 | $ 1,150 | $ 2,009 | $ 2,567 |