INVESTMENTS - Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 377,024	$ 383,295
Gross Unrealized Gains	455	500
Gross Unrealized Losses	(33)	(80)
Fair Value	377,446	383,715
U.S. treasury securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	136,831	126,916
Gross Unrealized Gains	186	142
Gross Unrealized Losses	(10)	(13)
Fair Value	137,007	127,045
Commercial paper
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	7,573	18,414
Gross Unrealized Gains	1	19
Gross Unrealized Losses	0	0
Fair Value	7,574	18,433
Corporate notes and obligations
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	232,620	237,965
Gross Unrealized Gains	268	339
Gross Unrealized Losses	(23)	(67)
Fair Value	$ 232,865	$ 238,237