MARKETABLE SECURITIES - Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Interest receivable	$ 2,600	$ 2,300
Amortized Cost	242,411	247,384
Gross Unrealized Gains	2,903	967
Gross Unrealized Losses	(32)	(711)
Estimated Fair Market Value	245,282	247,640
Investments due in 3 months or less:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	748	10,688
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	(42)
Estimated Fair Market Value	748	10,646
Investments due in 4-12 months:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	92,943	49,398
Gross Unrealized Gains	269	15
Gross Unrealized Losses	(26)	(347)
Estimated Fair Market Value	93,186	49,066
Investments due in 12 months or greater:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	148,720	187,298
Gross Unrealized Gains	2,634	952
Gross Unrealized Losses	(6)	(322)
Estimated Fair Market Value	151,348	187,928
Commercial paper | Investments due in 3 months or less:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	748
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Estimated Fair Market Value	748
Commercial paper | Investments due in 4-12 months:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		718
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Estimated Fair Market Value		718
Corporate securities | Investments due in 3 months or less:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		10,688
Gross Unrealized Gains		0
Gross Unrealized Losses		(42)
Estimated Fair Market Value		10,646
Corporate securities | Investments due in 4-12 months:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	92,943	48,680
Gross Unrealized Gains	269	15
Gross Unrealized Losses	(26)	(347)
Estimated Fair Market Value	93,186	48,348
Corporate securities | Investments due in 12 months or greater:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	148,720	187,298
Gross Unrealized Gains	2,634	952
Gross Unrealized Losses	(6)	(322)
Estimated Fair Market Value	$ 151,348	$ 187,928