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Note 7 - Available-for-Sale Securities (Tables) | 3 Months Ended
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Mar. 31, 2026
Investments, Debt and Equity Securities [Abstract] |
Summary of Company's Cash Equivalents | The Company’s cash equivalents consisted of the following (in thousands):
|  | March 31, 2026 |  |  | December 31, 2025 |
Cash equivalents |  |  |  |  |  |
Money market funds |  | $ | 49,158 |  |  | $ | 24,134 |
Commercial paper |  |  | - |  |  |  | 2,488 |
Corporate debt securities |  |  | 1,038 |  |  |  | 826 |
Total cash equivalents |  | $ | 50,196 |  |  | $ | 27,448 |
Summary of Company's of Available-for-sale Securities Measured at Fair Value on Recurring Basis | The Company’s available-for-sale securities that are measured at fair value on a recurring basis consisted of the following (in thousands):
|  |  |  | March 31, 2026 |
|  | Maturities |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities of U.S. government and government agencies |  | Within two years |  | $ | 72,144 |  |  | $ | 4 |  |  | $ | (49 | ) |  | $ | 72,099 |
Commercial paper |  | Within one year |  |  | 44,060 |  |  |  | 1 |  |  |  | (84 | ) |  |  | 43,977 |
Corporate debt securities |  | Within one year |  |  | 96,326 |  |  |  | 4 |  |  |  | (101 | ) |  |  | 96,229 |
Asset-backed securities |  | Within three years |  |  | 4,653 |  |  |  | 6 |  |  |  | (7 | ) |  |  | 4,652 |
Total available-for-sale securities |  |  |  | $ | 217,183 |  |  | $ | 15 |  |  | $ | (241 | ) |  | $ | 216,957 |
|  |  |  | December 31, 2025 |
|  | Maturities |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities of U.S. government and government agencies |  | Within one year |  | $ | 29,973 |  |  | $ | 37 |  |  | $ | - |  |  | $ | 30,010 |
Commercial paper |  | Within one year |  |  | 19,484 |  |  |  | 15 |  |  |  | - |  |  |  | 19,499 |
Certificates of deposit |  | Within one year |  |  | 1,720 |  |  |  | 1 |  |  |  | - |  |  |  | 1,721 |
Corporate debt securities |  | Within one year |  |  | 56,909 |  |  |  | 52 |  |  |  | (1 | ) |  |  | 56,960 |
Asset-backed securities |  | Within four years |  |  | 5,914 |  |  |  | 7 |  |  |  | (3 | ) |  |  | 5,918 |
Total available-for-sale securities |  |  |  | $ | 114,000 |  |  | $ | 112 |  |  | $ | (4 | ) |  | $ | 114,108 |

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