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Note 8 - Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2026
Fair Value Disclosures [Abstract] |
Summary of Cash Equivalents and Short-term Investments Measured at Fair Value on Recurring Basis | Below is the summary of the Company’s cash equivalents and short-term investments measured at fair value on a recurring basis and categorized using the fair value hierarchy (in thousands):
|  | March 31, 2026 |
|  | Level 1 |  |  | Level 2 |  |  | Total |
Cash equivalents |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 49,158 |  |  | $ | - |  |  | $ | 49,158 |
Corporate debt securities |  |  | - |  |  |  | 1,038 |  |  |  | 1,038 |
Total cash equivalents |  |  | 49,158 |  |  |  | 1,038 |  |  |  | 50,196 |
Available-for-sale securities |  |  |  |  |  |  |  |  |
Securities of U.S. government and government agencies |  |  | - |  |  |  | 72,099 |  |  |  | 72,099 |
Commercial paper |  |  | - |  |  |  | 43,977 |  |  |  | 43,977 |
Corporate debt securities |  |  | - |  |  |  | 96,229 |  |  |  | 96,229 |
Asset-backed securities |  |  | - |  |  |  | 4,652 |  |  |  | 4,652 |
Total available-for-sale securities |  |  | - |  |  |  | 216,957 |  |  |  | 216,957 |
Total cash equivalents and available-for-sale securities |  | $ | 49,158 |  |  | $ | 217,995 |  |  | $ | 267,153 |
|  | December 31, 2025 |
|  | Level 1 |  |  | Level 2 |  |  | Total |
Cash equivalents |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 24,134 |  |  | $ | - |  |  | $ | 24,134 |
Commercial paper |  |  | - |  |  |  | 2,488 |  |  |  | 2,488 |
Corporate debt securities |  |  | - |  |  |  | 826 |  |  |  | 826 |
Total cash equivalents |  |  | 24,134 |  |  |  | 3,314 |  |  |  | 27,448 |
Available-for-sale securities |  |  |  |  |  |  |  |  |
Securities of U.S. government and government agencies |  |  | - |  |  |  | 30,010 |  |  |  | 30,010 |
Commercial paper |  |  | - |  |  |  | 19,499 |  |  |  | 19,499 |
Certificates of deposit |  |  | - |  |  |  | 1,721 |  |  |  | 1,721 |
Corporate debt securities |  |  | - |  |  |  | 56,960 |  |  |  | 56,960 |
Asset-backed securities |  |  | - |  |  |  | 5,918 |  |  |  | 5,918 |
Total available-for-sale securities |  |  | - |  |  |  | 114,108 |  |  |  | 114,108 |
Total cash equivalents and available-for-sale securities |  | $ | 24,134 |  |  | $ | 117,422 |  |  | $ | 141,556 |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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