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Fair Value Measurements and Fair Value of Financial Instruments - Fair value (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair value on a recurring basis |  |
Cash equivalents fair value | $ 32,100 | $ 75,300
Unrealized Gains | 119 | 233
Unrealized Losses | (2) | (3)
Level 2 |  |
Fair value on a recurring basis |  |
Marketable securities | $ 93,000 | 82,800
Level 2 | Minimum |  |
Fair value on a recurring basis |  |
Expected maturity term | 3 days |
Level 2 | Maximum |  |
Fair value on a recurring basis |  |
Expected maturity term | 15 months 6 days |
Amortized cost |  |
Fair value on a recurring basis |  |
Cash equivalents fair value | $ 32,083 | 75,277
Total assets fair value | 124,969 | 157,865
Amortized cost | Level 1 | Money market funds |  |
Fair value on a recurring basis |  |
Cash equivalents fair value | 32,083 | 72,800
Amortized cost | Level 2 | U.S. Treasury securities |  |
Fair value on a recurring basis |  |
Cash equivalents fair value |  | 2,477
Short-term |  |
Fair value on a recurring basis |  |
Unrealized Gains | 96 | 189
Unrealized Losses | (1) | (3)
Short-term | Level 2 | Commercial paper |  |
Fair value on a recurring basis |  |
Unrealized Gains | 13 | 25
Unrealized Losses | 0 | (1)
Short-term | Level 2 | Corporate debt securities |  |
Fair value on a recurring basis |  |
Unrealized Gains | 2 | 7
Unrealized Losses | 0 | 0
Short-term | Level 2 | U.S. Treasury securities |  |
Fair value on a recurring basis |  |
Unrealized Gains | 66 | 123
Unrealized Losses | (1) | 0
Short-term | Level 2 | Agency securities |  |
Fair value on a recurring basis |  |
Unrealized Gains | 2 | 12
Unrealized Losses | 0 | (2)
Short-term | Level 2 | Asset-backed securities |  |
Fair value on a recurring basis |  |
Unrealized Gains | 13 | 22
Unrealized Losses | 0 | 0
Short-term | Amortized cost |  |
Fair value on a recurring basis |  |
Marketable securities | 84,102 | 75,224
Short-term | Amortized cost | Level 2 | Commercial paper |  |
Fair value on a recurring basis |  |
Marketable securities | 19,845 | 14,447
Short-term | Amortized cost | Level 2 | Corporate debt securities |  |
Fair value on a recurring basis |  |
Marketable securities | 1,485 | 6,909
Short-term | Amortized cost | Level 2 | U.S. Treasury securities |  |
Fair value on a recurring basis |  |
Marketable securities | 52,227 | 27,493
Short-term | Amortized cost | Level 2 | Agency securities |  |
Fair value on a recurring basis |  |
Marketable securities | 4,491 | 21,345
Short-term | Amortized cost | Level 2 | Asset-backed securities |  |
Fair value on a recurring basis |  |
Marketable securities | 6,054 | 5,030
Long-term |  |
Fair value on a recurring basis |  |
Unrealized Gains | 23 | 44
Unrealized Losses | (1) | 0
Long-term | Level 2 | Commercial paper |  |
Fair value on a recurring basis |  |
Unrealized Gains | 0 |
Unrealized Losses | (1) |
Long-term | Level 2 | U.S. Treasury securities |  |
Fair value on a recurring basis |  |
Unrealized Gains | 23 | 36
Unrealized Losses | 0 | 0
Long-term | Level 2 | Asset-backed securities |  |
Fair value on a recurring basis |  |
Unrealized Gains |  | 8
Unrealized Losses |  | 0
Long-term | Amortized cost |  |
Fair value on a recurring basis |  |
Marketable securities | 8,784 | 7,364
Long-term | Amortized cost | Level 2 | Commercial paper |  |
Fair value on a recurring basis |  |
Marketable securities | 2,757 |
Long-term | Amortized cost | Level 2 | U.S. Treasury securities |  |
Fair value on a recurring basis |  |
Marketable securities | 6,027 | 4,884
Long-term | Amortized cost | Level 2 | Asset-backed securities |  |
Fair value on a recurring basis |  |
Marketable securities |  | 2,480
Recurring | Estimated Fair Value |  |
Fair value on a recurring basis |  |
Cash equivalents fair value | 32,083 | 75,277
Total assets fair value | 125,086 | 158,095
Recurring | Estimated Fair Value | Level 1 | Money market funds |  |
Fair value on a recurring basis |  |
Cash equivalents fair value | 32,083 | 72,800
Recurring | Estimated Fair Value | Level 2 | U.S. Treasury securities |  |
Fair value on a recurring basis |  |
Cash equivalents fair value |  | 2,477
Recurring | Short-term | Estimated Fair Value |  |
Fair value on a recurring basis |  |
Marketable securities | 84,197 | 75,410
Recurring | Short-term | Estimated Fair Value | Level 2 | Commercial paper |  |
Fair value on a recurring basis |  |
Marketable securities | 19,858 | 14,471
Recurring | Short-term | Estimated Fair Value | Level 2 | Corporate debt securities |  |
Fair value on a recurring basis |  |
Marketable securities | 1,487 | 6,916
Recurring | Short-term | Estimated Fair Value | Level 2 | U.S. Treasury securities |  |
Fair value on a recurring basis |  |
Marketable securities | 52,292 | 27,616
Recurring | Short-term | Estimated Fair Value | Level 2 | Agency securities |  |
Fair value on a recurring basis |  |
Marketable securities | 4,493 | 21,355
Recurring | Short-term | Estimated Fair Value | Level 2 | Asset-backed securities |  |
Fair value on a recurring basis |  |
Marketable securities | 6,067 | 5,052
Recurring | Long-term | Estimated Fair Value |  |
Fair value on a recurring basis |  |
Marketable securities | 8,806 | 7,408
Recurring | Long-term | Estimated Fair Value | Level 2 | Commercial paper |  |
Fair value on a recurring basis |  |
Marketable securities | 2,756 |
Recurring | Long-term | Estimated Fair Value | Level 2 | U.S. Treasury securities |  |
Fair value on a recurring basis |  |
Marketable securities | $ 6,050 | 4,920
Recurring | Long-term | Estimated Fair Value | Level 2 | Asset-backed securities |  |
Fair value on a recurring basis |  |
Marketable securities |  | $ 2,488

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 4: 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 5: 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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