CASH, CASH EQUIVALENTS AND INVESTMENTS - Schedule of Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Short-term Investments [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	$ 414,925	$ 490,170
Available-for-sale Securities, Gross Unrealized Gains	3	32
Available-for-sale Securities, Gross Unrealized Losses	(2,578)	(5,857)
Available-for-sale Securities, Fair Value Disclosure	412,350	484,345
Long-term Investments [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	289,152	249,943
Available-for-sale Securities, Gross Unrealized Gains	0	52
Available-for-sale Securities, Gross Unrealized Losses	(2,005)	(2,180)
Available-for-sale Securities, Fair Value Disclosure	287,147	247,815
Corporate Bonds [Member] | Short-term Investments [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	2,386	150,698
Available-for-sale Securities, Gross Unrealized Gains	3
Available-for-sale Securities, Gross Unrealized Losses	(16)	(910)
Available-for-sale Securities, Fair Value Disclosure	2,373	149,788
Corporate Bonds [Member] | Long-term Investments [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	128	2,479
Available-for-sale Securities, Gross Unrealized Losses	(118)	(28)
Available-for-sale Securities, Fair Value Disclosure	10	2,451
U.S. Government Bonds [Member] | Short-term Investments [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	412,539	339,472
Available-for-sale Securities, Gross Unrealized Gains		32
Available-for-sale Securities, Gross Unrealized Losses	(2,562)	(4,947)
Available-for-sale Securities, Fair Value Disclosure	409,977	334,557
U.S. Government Bonds [Member] | Long-term Investments [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	289,024	247,464
Available-for-sale Securities, Gross Unrealized Gains		52
Available-for-sale Securities, Gross Unrealized Losses	(1,887)	(2,152)
Available-for-sale Securities, Fair Value Disclosure	$ 287,137	$ 245,364