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Note 14 - Fair Value Measurements - Schedule of the Fair Value of Available-for-sale Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Available for sale securities, amortized cost | $ 292,391 | $ 189,007
Available for sale securities, fair value | 292,368 | 189,012
Available for sale securities, gross unrealized gains (losses) | (23) | 5
US Treasury Securities [Member] |  |
Available for sale securities, amortized cost | 292,391 | 189,007
Available for sale securities, fair value | 292,368 | 189,012
Available for sale securities, gross unrealized gains (losses) | $ (23) | $ 5

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