FAIR VALUE MEASUREMENTS - Summary of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Marketable securities
Total fair value	$ 282,424	$ 192,441
Quoted Prices in Active Markets for Identical Assets (Level 1)
Marketable securities
Total fair value	64,760	129,100
Significant Other Observable Inputs (Level 2)
Marketable securities
Total fair value	217,664	63,341
Significant Unobservable Inputs (Level 3)
Marketable securities
Total fair value	0	0
Corporate debt securities
Marketable securities
Marketable securities	140,588	45,762
Corporate debt securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Marketable securities
Marketable securities	0	0
Corporate debt securities | Significant Other Observable Inputs (Level 2)
Marketable securities
Marketable securities	140,588	45,762
Corporate debt securities | Significant Unobservable Inputs (Level 3)
Marketable securities
Marketable securities	0	0
Asset-backed securities
Marketable securities
Marketable securities		2,904
Asset-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Marketable securities
Marketable securities		0
Asset-backed securities | Significant Other Observable Inputs (Level 2)
Marketable securities
Marketable securities		2,904
Asset-backed securities | Significant Unobservable Inputs (Level 3)
Marketable securities
Marketable securities		0
Government and agency - U.S.
Marketable securities
Marketable securities	47,199	14,675
Government and agency - U.S. | Quoted Prices in Active Markets for Identical Assets (Level 1)
Marketable securities
Marketable securities	0	0
Government and agency - U.S. | Significant Other Observable Inputs (Level 2)
Marketable securities
Marketable securities	47,199	14,675
Government and agency - U.S. | Significant Unobservable Inputs (Level 3)
Marketable securities
Marketable securities	0	0
Money market securities
Cash and cash equivalents
Cash and cash equivalents	64,760	129,100
Money market securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Cash and cash equivalents
Cash and cash equivalents	64,760	129,100
Money market securities | Significant Other Observable Inputs (Level 2)
Cash and cash equivalents
Cash and cash equivalents	0	0
Money market securities | Significant Unobservable Inputs (Level 3)
Cash and cash equivalents
Cash and cash equivalents	0	$ 0
Government and agency - U.S.
Cash and cash equivalents
Cash and cash equivalents	29,877
Government and agency - U.S. | Quoted Prices in Active Markets for Identical Assets (Level 1)
Cash and cash equivalents
Cash and cash equivalents	0
Government and agency - U.S. | Significant Other Observable Inputs (Level 2)
Cash and cash equivalents
Cash and cash equivalents	29,877
Government and agency - U.S. | Significant Unobservable Inputs (Level 3)
Cash and cash equivalents
Cash and cash equivalents	$ 0