INVESTMENTS IN DEBT SECURITIES - Short-Term and Long-Term Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,701,110
Fair Value	1,655,280
Short-term debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,100,805	$ 869,525
Gross Unrealized Gains	24	408
Gross Unrealized Losses	(18,978)	(650)
Fair Value	1,081,851	869,283
Short-term debt securities \| U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	96,545	73,986
Gross Unrealized Gains	16	150
Gross Unrealized Losses	(2,120)	(8)
Fair Value	94,441	74,128
Short-term debt securities \| Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	368,110	293,460
Gross Unrealized Gains	2	128
Gross Unrealized Losses	(7,475)	(269)
Fair Value	360,637	293,319
Short-term debt securities \| Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	31,503	36,088
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	31,503	36,088
Short-term debt securities \| Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,884	5,543
Gross Unrealized Gains	0	5
Gross Unrealized Losses	(191)	0
Fair Value	9,693	5,548
Short-term debt securities \| Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	6,400	9,200
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	6,400	9,200
Short-term debt securities \| U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	580,568	430,992
Gross Unrealized Gains	6	106
Gross Unrealized Losses	(8,937)	(255)
Fair Value	571,637	430,843
Short-term debt securities \| Foreign government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,795	20,256
Gross Unrealized Gains	0	19
Gross Unrealized Losses	(255)	(118)
Fair Value	7,540	20,157
Long-term debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	600,305	1,536,331
Gross Unrealized Gains	9	111
Gross Unrealized Losses	(26,885)	(10,012)
Fair Value	573,429	1,526,430
Long-term debt securities \| U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	74,097	154,454
Gross Unrealized Gains	0	26
Gross Unrealized Losses	(3,782)	(1,160)
Fair Value	70,315	153,320
Long-term debt securities \| Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	245,891	667,699
Gross Unrealized Gains	6	80
Gross Unrealized Losses	(9,171)	(4,572)
Fair Value	236,726	663,207
Long-term debt securities \| Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,415	22,541
Gross Unrealized Gains	3	2
Gross Unrealized Losses	(664)	(126)
Fair Value	9,754	22,417
Long-term debt securities \| U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	268,902	678,553
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(13,210)	(4,080)
Fair Value	255,692	674,476
Long-term debt securities \| Foreign government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,000	13,084
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(58)	(74)
Fair Value	$ 942	$ 13,010

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 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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Amount 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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