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Note 2 - Summary of Significant Accounting Policies - Debt Securities by Maturity (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Within one year, amortized cost | $ 11,991 |
Within one year, fair value | 11,979 |
After one year through two years, amortized cost | 9,974 |
After one year through two years, fair value | 9,950 |
Amortized cost | 21,965 | $ 19,933
Fair value | $ 21,929 | $ 20,009

X
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