INVESTMENTS IN DEBT SECURITIES - Short-Term and Long-Term Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 705,370
Fair Value	706,664
Short-term debt securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	516,890	$ 402,814
Gross Unrealized Gains	890	713
Gross Unrealized Losses	(3)	(101)
Fair Value	517,777	403,426
Short-term debt securities: \| U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	19,017	34,454
Gross Unrealized Gains	18	15
Gross Unrealized Losses	0	(1)
Fair Value	19,035	34,468
Short-term debt securities: \| Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	58,954	160,238
Gross Unrealized Gains	165	248
Gross Unrealized Losses	0	(96)
Fair Value	59,119	160,390
Short-term debt securities: \| Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	92,655	333
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	92,655	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	2,211	1,051
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	2,211	1,051
Short-term debt securities: \| U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	343,923	206,340
Gross Unrealized Gains	707	449
Gross Unrealized Losses	(3)	(4)
Fair Value	344,627	206,785
Long-term debt securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	188,480	470,808
Gross Unrealized Gains	653	1,938
Gross Unrealized Losses	(246)	(769)
Fair Value	188,887	471,977
Long-term debt securities: \| U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		49,017
Gross Unrealized Gains		23
Gross Unrealized Losses		(10)
Fair Value		49,030
Long-term debt securities: \| Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	81,332	195,035
Gross Unrealized Gains	139	693
Gross Unrealized Losses	(2)	(384)
Fair Value	81,469	195,344
Long-term debt securities: \| Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,167	4,592
Gross Unrealized Gains	28	4
Gross Unrealized Losses	(244)	(251)
Fair Value	6,951	4,345
Long-term debt securities: \| U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	99,981	222,164
Gross Unrealized Gains	486	1,218
Gross Unrealized Losses	0	(124)
Fair Value	$ 100,467	$ 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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