Note 7 - Right-of-use Assets, Operating Leases - Schedule of Right-of-use Assets (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Assets and Liabilities, Lessee [Abstract] | ||
| Right-of-use assets, operating leases, beginning of year | $ 3,124 | $ 3,124 |
| Additions to right-of-use assets, operating leases | 0 | 0 |
| Right-of-use assets, operating leases, end of year | 3,124 | 3,124 |
| Less: accumulated amortization | (2,949) | (2,553) |
| Right-of use assets, operating leases, net | $ 175 | $ 571 |