MARKETABLE SECURITIES - Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Interest receivable	$ 2,700	$ 2,300
Amortized Cost	240,734	247,384
Gross Unrealized Gains	120	967
Gross Unrealized Losses	(869)	(711)
Estimated Fair Market Value	239,985	247,640
Investments due in 3 months or less:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,998	10,688
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(23)	(42)
Estimated Fair Market Value	3,975	10,646
Investments due in 4-12 months:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	90,812	49,398
Gross Unrealized Gains	8	15
Gross Unrealized Losses	(343)	(347)
Estimated Fair Market Value	90,477	49,066
Investments due in 12 months or greater:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	145,924	187,298
Gross Unrealized Gains	112	952
Gross Unrealized Losses	(503)	(322)
Estimated Fair Market Value	145,533	187,928
Commercial paper | Investments due in 4-12 months:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	738	718
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Market Value	738	718
Corporate securities | Investments due in 3 months or less:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,998	10,688
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(23)	(42)
Estimated Fair Market Value	3,975	10,646
Corporate securities | Investments due in 4-12 months:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	90,074	48,680
Gross Unrealized Gains	8	15
Gross Unrealized Losses	(343)	(347)
Estimated Fair Market Value	89,739	48,348
Corporate securities | Investments due in 12 months or greater:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	145,924	187,298
Gross Unrealized Gains	112	952
Gross Unrealized Losses	(503)	(322)
Estimated Fair Market Value	$ 145,533	$ 187,928