BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Schedule of Debt Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]
Total debt investments	$ 406,217	$ 438,533
Cash and Cash Equivalents
Debt and Equity Securities, FV-NI [Line Items]
Total debt investments	108,825	18,828
Cash and Cash Equivalents | Level 1 | Money market funds
Debt and Equity Securities, FV-NI [Line Items]
Total debt investments	108,825	18,828
Short-term Investments
Debt and Equity Securities, FV-NI [Line Items]
Total debt investments	297,392	419,705
Short-term Investments | Level 1 | U.S. government securities
Debt and Equity Securities, FV-NI [Line Items]
Total debt investments	5,033	37,805
Short-term Investments | Level 2 | U.S. agency securities
Debt and Equity Securities, FV-NI [Line Items]
Total debt investments	0	9,804
Short-term Investments | Level 2 | Corporate bonds
Debt and Equity Securities, FV-NI [Line Items]
Total debt investments	277,409	364,926
Short-term Investments | Level 2 | Asset-backed securities
Debt and Equity Securities, FV-NI [Line Items]
Total debt investments	$ 14,950	$ 7,170