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FAIR VALUE MEASUREMENTS - RECURRING BASIS (Details) - Recurring basis - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value on a Recurring Basis |  |
Total | $ 355,420 | $ 324,904
Money market funds |  |
Fair Value on a Recurring Basis |  |
Total | 33,435 | 17,658
Certificate of deposit |  |
Fair Value on a Recurring Basis |  |
Total | 273 | 272
U.S. Treasury securities |  |
Fair Value on a Recurring Basis |  |
Total | 35,536 | 29,742
Government-sponsored enterprise securities |  |
Fair Value on a Recurring Basis |  |
Total | 24,707 | 99,872
Commercial paper |  |
Fair Value on a Recurring Basis |  |
Total | 141,015 | 102,268
Corporate notes |  |
Fair Value on a Recurring Basis |  |
Total | 120,454 | 75,092
Level 1 |  |
Fair Value on a Recurring Basis |  |
Total | 33,708 | 17,930
Level 1 | Money market funds |  |
Fair Value on a Recurring Basis |  |
Total | 33,435 | 17,658
Level 1 | Certificate of deposit |  |
Fair Value on a Recurring Basis |  |
Total | 273 | 272
Level 2 |  |
Fair Value on a Recurring Basis |  |
Total | 321,712 | 306,974
Level 2 | U.S. Treasury securities |  |
Fair Value on a Recurring Basis |  |
Total | 35,536 | 29,742
Level 2 | Government-sponsored enterprise securities |  |
Fair Value on a Recurring Basis |  |
Total | 24,707 | 99,872
Level 2 | Commercial paper |  |
Fair Value on a Recurring Basis |  |
Total | 141,015 | 102,268
Level 2 | Corporate notes |  |
Fair Value on a Recurring Basis |  |
Total | $ 120,454 | $ 75,092

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