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FAIR VALUE MEASUREMENTS - Financial Instruments Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value on a Recurring Basis |  |
Marketable securities | $ 352,990 | $ 422,069
Recurring basis |  |
Fair Value on a Recurring Basis |  |
Assets | 393,641 | 474,121
Recurring basis | U.S. Treasury securities |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 22,785 | 30,570
Recurring basis | Government-sponsored enterprise securities |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 4,001 | 8,748
Recurring basis | Commercial paper |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 123,995 | 185,201
Recurring basis | Corporate notes |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 204,695 | 202,527
Recurring basis | Money market funds |  |
Fair Value on a Recurring Basis |  |
Cash, cash equivalents and restricted cash | 37,892 | 46,802
Recurring basis | Certificate of deposit |  |
Fair Value on a Recurring Basis |  |
Cash, cash equivalents and restricted cash | 273 | 273
Recurring basis | Level 1 |  |
Fair Value on a Recurring Basis |  |
Assets | 38,165 | 47,075
Recurring basis | Level 1 | U.S. Treasury securities |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 0 | 0
Recurring basis | Level 1 | Government-sponsored enterprise securities |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 0 | 0
Recurring basis | Level 1 | Commercial paper |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 0 | 0
Recurring basis | Level 1 | Corporate notes |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 0 | 0
Recurring basis | Level 1 | Money market funds |  |
Fair Value on a Recurring Basis |  |
Cash, cash equivalents and restricted cash | 37,892 | 46,802
Recurring basis | Level 1 | Certificate of deposit |  |
Fair Value on a Recurring Basis |  |
Cash, cash equivalents and restricted cash | 273 | 273
Recurring basis | Level 2 |  |
Fair Value on a Recurring Basis |  |
Assets | 355,476 | 427,046
Recurring basis | Level 2 | U.S. Treasury securities |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 22,785 | 30,570
Recurring basis | Level 2 | Government-sponsored enterprise securities |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 4,001 | 8,748
Recurring basis | Level 2 | Commercial paper |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 123,995 | 185,201
Recurring basis | Level 2 | Corporate notes |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 204,695 | 202,527
Recurring basis | Level 2 | Money market funds |  |
Fair Value on a Recurring Basis |  |
Cash, cash equivalents and restricted cash | 0 | 0
Recurring basis | Level 2 | Certificate of deposit |  |
Fair Value on a Recurring Basis |  |
Cash, cash equivalents and restricted cash | 0 | 0
Recurring basis | Level 3 |  |
Fair Value on a Recurring Basis |  |
Assets | 0 | 0
Recurring basis | Level 3 | U.S. Treasury securities |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 0 | 0
Recurring basis | Level 3 | Government-sponsored enterprise securities |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 0 | 0
Recurring basis | Level 3 | Commercial paper |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 0 | 0
Recurring basis | Level 3 | Corporate notes |  |
Fair Value on a Recurring Basis |  |
Marketable securities | 0 | 0
Recurring basis | Level 3 | Money market funds |  |
Fair Value on a Recurring Basis |  |
Cash, cash equivalents and restricted cash | 0 | 0
Recurring basis | Level 3 | Certificate of deposit |  |
Fair Value on a Recurring Basis |  |
Cash, cash equivalents and restricted cash | $ 0 | $ 0

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