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Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
US Treasury Securities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Short-term investments | $ 83,838 | $ 129,730
Long-term investments | 5,108 | 5,089
US Government-Sponsored Enterprises Securities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Short-term investments | 10,011 | 9,932
Recurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value | 132,559 | 183,193
Recurring | Money Market Funds |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents, fair value | 33,602 | 38,442
Recurring | US Treasury Securities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Short-term investments | 83,838 | 129,730
Long-term investments | 5,108 | 5,089
Recurring | US Government-Sponsored Enterprises Securities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Short-term investments | 10,011 | 9,932
Recurring | Level 1 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value | 122,548 | 173,261
Recurring | Level 1 | Money Market Funds |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents, fair value | 33,602 | 38,442
Recurring | Level 1 | US Treasury Securities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Short-term investments | 83,838 | 129,730
Long-term investments | 5,108 | 5,089
Recurring | Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value | 10,011 | 9,932
Recurring | Level 2 | US Government-Sponsored Enterprises Securities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Short-term investments | $ 10,011 | $ 9,932

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