Note 11 - Retirement Benefits (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 100.00% | |
| Defined Contribution Plan, Employers Matching Contribution, Requisite Service Period (Year) | 5 years | |
| Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 0 | $ 0 |