INVESTMENTS IN DEBT SECURITIES - Short-Term and Long-Term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 508,840
Fair Value	509,983
Short-term debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	312,830	$ 402,814
Gross Unrealized Gains	594	713
Gross Unrealized Losses	(13)	(101)
Fair Value	313,411	403,426
Short-term debt securities \| U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	12,517	34,454
Gross Unrealized Gains	1	15
Gross Unrealized Losses	0	(1)
Fair Value	12,518	34,468
Short-term debt securities \| Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	74,821	160,238
Gross Unrealized Gains	253	248
Gross Unrealized Losses	(2)	(96)
Fair Value	75,072	160,390
Short-term debt securities \| Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	533	333
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	533	333
Short-term debt securities \| Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	130	398
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Value	130	399
Short-term debt securities \| Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,246	1,051
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	1,246	1,051
Short-term debt securities \| U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	223,583	206,340
Gross Unrealized Gains	340	449
Gross Unrealized Losses	(11)	(4)
Fair Value	223,912	206,785
Long-term debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	196,010	470,808
Gross Unrealized Gains	854	1,938
Gross Unrealized Losses	(292)	(769)
Fair Value	196,572	471,977
Long-term debt securities \| U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	47,000	49,017
Gross Unrealized Gains	50	23
Gross Unrealized Losses	(5)	(10)
Fair Value	47,045	49,030
Long-term debt securities \| Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	26,014	195,035
Gross Unrealized Gains	86	693
Gross Unrealized Losses	(25)	(384)
Fair Value	26,075	195,344
Long-term debt securities \| Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,773	4,592
Gross Unrealized Gains	43	4
Gross Unrealized Losses	(235)	(251)
Fair Value	5,581	4,345
Long-term debt securities \| U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	117,223	222,164
Gross Unrealized Gains	675	1,218
Gross Unrealized Losses	(27)	(124)
Fair Value	$ 117,871	$ 223,258

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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