FAIR VALUE MEASUREMENTS - Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets
Assets	$ 413,715	$ 358,538
Cash equivalents
Assets
Assets	296,384	244,569
Commercial paper
Assets
Assets	10,280	24,609
Corporate debt securities
Assets
Assets	81,001	58,737
U.S. government securities
Assets
Assets	26,050	30,623
Level 1
Assets
Assets	296,384	243,685
Level 1 | Cash equivalents
Assets
Assets	296,384	243,685
Level 2
Assets
Assets	117,331	114,853
Level 2 | Cash equivalents
Assets
Assets		884
Level 2 | Commercial paper
Assets
Assets	10,280	24,609
Level 2 | Corporate debt securities
Assets
Assets	81,001	58,737
Level 2 | U.S. government securities
Assets
Assets	$ 26,050	$ 30,623