Note 16 - Equity Incentive Plans - Summary of Stock-based Compensation 2 (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Share-Based Payment Arrangement, Expense | $ 133 | $ 177 | $ 341 | $ 277 |
| Disaggregation of Income Statement Expense, Caption, Identifier [Axis]: us-gaap:ResearchAndDevelopmentExpense | ||||
| Share-Based Payment Arrangement, Expense | 11 | 59 | 47 | 102 |
| Disaggregation of Income Statement Expense, Caption, Identifier [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense | ||||
| Share-Based Payment Arrangement, Expense | $ 122 | $ 118 | $ 294 | $ 175 |