Note 11 - Liability for Employee Rights Upon Retirement (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Monthly Deposit Rate, Percent of Salary | 8.33% | 8.33% | ||
| Employee Benefits and Share-Based Compensation | $ 10 | $ 11 | $ 17 | $ 22 |