Note 5 - Stock-based Compensation - Schedule of Compensation Cost Related to Non-vested Awards (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2025 |
Dec. 31, 2024 |
|
| Non-vested awards, amount | $ 4,127 | $ 4,950 |
| Share-Based Payment Arrangement, Option [Member] | ||
| Non-vested awards, amount | $ 2,086 | $ 2,501 |
| Non-vested awards, period (Year) | 3 years 3 months 21 days | 3 years 9 months 18 days |
| Restricted Stock [Member] | ||
| Non-vested awards, amount | $ 2,041 | $ 2,449 |
| Non-vested awards, period (Year) | 3 years 3 months 21 days | 3 years 9 months 18 days |