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Note 7 - Marketable Securities - Available-for-sale Marketable Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Marketable securities | $ 125,568 | $ 143,117
Corporate Bonds [Member] |  |
Available For Sale Securities Debt Maturities Within One Year Amortized Cost | 50,425 | 61,113
Available-for-sale - matures within one year, Gross unrealized gains | 118 | 41
Available-for-sale - matures within one year, Gross unrealized losses | (424) | (146)
Available-for-sale- matures within one year, Fair Value | 50,119 | 61,008
Available-for-sale - matures after one year through five years, amortized cost | 75,632 | 83,491
Available-for-sale - matures after one year through five years, Gross unrealized gains | 322 | 221
Available for Sale Matures after One Year Through Five Years, Gross Unrealized Loss | (505) | (1,603)
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value | 75,449 | 82,109
Debt Securities, Available-for-Sale, Amortized Cost | 126,057 | 144,604
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax | 440 | 262
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax | (929) | (1,749)
Marketable securities | $ 125,568 | $ 143,117

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