INVESTMENTS IN DEBT SECURITIES - Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Short-term debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	$ 40,559	$ 151,548
Less than 12 Months, Gross Unrealized Losses	(10)	(183)
Greater than 12 months, Fair Value	48,502	385,780
Greater than 12 months, Gross Unrealized Losses	(125)	(7,419)
Total, Fair Value	89,061	537,328
Total, Gross Unrealized Losses	(135)	(7,602)
Short-term debt securities \| U.S. agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	5,000	9,770
Less than 12 Months, Gross Unrealized Losses	0	(10)
Greater than 12 months, Fair Value	3,970	57,745
Greater than 12 months, Gross Unrealized Losses	(30)	(1,253)
Total, Fair Value	8,970	67,515
Total, Gross Unrealized Losses	(30)	(1,263)
Short-term debt securities \| Corporate bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	10,420	61,054
Less than 12 Months, Gross Unrealized Losses	(3)	(60)
Greater than 12 months, Fair Value	4,620	110,706
Greater than 12 months, Gross Unrealized Losses	(9)	(1,673)
Total, Fair Value	15,040	171,760
Total, Gross Unrealized Losses	(12)	(1,733)
Short-term debt securities \| Municipal securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value		0
Less than 12 Months, Gross Unrealized Losses		0
Greater than 12 months, Fair Value		9,165
Greater than 12 months, Gross Unrealized Losses		(231)
Total, Fair Value		9,165
Total, Gross Unrealized Losses		(231)
Short-term debt securities \| U.S. government securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	25,139	80,724
Less than 12 Months, Gross Unrealized Losses	(7)	(113)
Greater than 12 months, Fair Value	39,912	207,183
Greater than 12 months, Gross Unrealized Losses	(86)	(4,243)
Total, Fair Value	65,051	287,907
Total, Gross Unrealized Losses	(93)	(4,356)
Short-term debt securities \| Foreign government securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value		0
Less than 12 Months, Gross Unrealized Losses		0
Greater than 12 months, Fair Value		981
Greater than 12 months, Gross Unrealized Losses		(19)
Total, Fair Value		981
Total, Gross Unrealized Losses		(19)
Long-term debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	45,189	41,269
Less than 12 Months, Gross Unrealized Losses	(101)	(92)
Greater than 12 months, Fair Value	388	2,657
Greater than 12 months, Gross Unrealized Losses	(98)	(126)
Total, Fair Value	45,577	43,926
Total, Gross Unrealized Losses	(199)	(218)
Long-term debt securities \| U.S. agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	13,995
Less than 12 Months, Gross Unrealized Losses	(5)
Greater than 12 months, Fair Value	0
Greater than 12 months, Gross Unrealized Losses	0
Total, Fair Value	13,995
Total, Gross Unrealized Losses	(5)
Long-term debt securities \| Corporate bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	25,116	11,819
Less than 12 Months, Gross Unrealized Losses	(62)	(31)
Greater than 12 months, Fair Value	0	2,274
Greater than 12 months, Gross Unrealized Losses	0	(14)
Total, Fair Value	25,116	14,093
Total, Gross Unrealized Losses	(62)	(45)
Long-term debt securities \| Municipal securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	1,460	976
Less than 12 Months, Gross Unrealized Losses	(30)	(24)
Greater than 12 months, Fair Value	388	383
Greater than 12 months, Gross Unrealized Losses	(98)	(112)
Total, Fair Value	1,848	1,359
Total, Gross Unrealized Losses	(128)	(136)
Long-term debt securities \| U.S. government securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	4,618	28,474
Less than 12 Months, Gross Unrealized Losses	(4)	(37)
Greater than 12 months, Fair Value	0	0
Greater than 12 months, Gross Unrealized Losses	0	0
Total, Fair Value	4,618	28,474
Total, Gross Unrealized Losses	$ (4)	$ (37)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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