FAIR VALUE MEASUREMENTS - RECURRING BASIS (Details) - Recurring basis - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value on a Recurring Basis
Total	$ 388,217	$ 324,904
Money market funds
Fair Value on a Recurring Basis
Total	75,651	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	39,855	29,742
Government-sponsored enterprise securities
Fair Value on a Recurring Basis
Total	49,481	99,872
Commercial paper
Fair Value on a Recurring Basis
Total	110,209	102,268
Corporate notes
Fair Value on a Recurring Basis
Total	112,748	75,092
Level 1
Fair Value on a Recurring Basis
Total	75,924	17,930
Level 1 | Money market funds
Fair Value on a Recurring Basis
Total	75,651	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	312,293	306,974
Level 2 | U.S. Treasury securities
Fair Value on a Recurring Basis
Total	39,855	29,742
Level 2 | Government-sponsored enterprise securities
Fair Value on a Recurring Basis
Total	49,481	99,872
Level 2 | Commercial paper
Fair Value on a Recurring Basis
Total	110,209	102,268
Level 2 | Corporate notes
Fair Value on a Recurring Basis
Total	$ 112,748	$ 75,092