FAIR VALUE MEASUREMENTS - RECURRING BASIS (Details) - Recurring basis - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value on a Recurring Basis
Total	$ 156,036	$ 209,208
Money market funds
Fair Value on a Recurring Basis
Total	39,864	24,207
Certificate of deposit
Fair Value on a Recurring Basis
Total	271
U.S. Treasury securities
Fair Value on a Recurring Basis
Total	12,921	17,088
Municipal securities
Fair Value on a Recurring Basis
Total	2,976	2,985
Government-sponsored enterprise securities
Fair Value on a Recurring Basis
Total	9,846	12,493
Commercial paper
Fair Value on a Recurring Basis
Total	64,199	91,861
Corporate notes
Fair Value on a Recurring Basis
Total	25,959	60,574
Level 1
Fair Value on a Recurring Basis
Total	40,135	24,207
Level 1 | Money market funds
Fair Value on a Recurring Basis
Total	39,864	24,207
Level 1 | Certificate of deposit
Fair Value on a Recurring Basis
Total	271
Level 2
Fair Value on a Recurring Basis
Total	115,901	185,001
Level 2 | U.S. Treasury securities
Fair Value on a Recurring Basis
Total	12,921	17,088
Level 2 | Municipal securities
Fair Value on a Recurring Basis
Total	2,976	2,985
Level 2 | Government-sponsored enterprise securities
Fair Value on a Recurring Basis
Total	9,846	12,493
Level 2 | Commercial paper
Fair Value on a Recurring Basis
Total	64,199	91,861
Level 2 | Corporate notes
Fair Value on a Recurring Basis
Total	$ 25,959	$ 60,574