Note 10 - Share Based Compensation - Allocation of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Stock-based compensation | $ 165 | $ 141 | $ 754 | $ 886 |
| Cost of Sales [Member] (Deprecated 2026) | ||||
| Stock-based compensation | 58 | 12 | ||
| Research and Development Expense [Member] (Deprecated 2026) | ||||
| Stock-based compensation | 61 | 13 | ||
| Selling, General and Administrative Expenses [Member] (Deprecated 2026) | ||||
| Stock-based compensation | $ 635 | $ 861 | ||