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SHORT-TERM INVESTMENTS - Summary of Amortized Costs, Gross Unrealized Gains and Losses and Estimated Fair Values of Available-For-Sale Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 1,043,278	$ 997,188
Gross unrealized gains	4,039	15,437
Gross unrealized losses	(5,729)	(343)
Estimated fair value (Level 2 within the fair value hierarchy)	1,041,589	1,012,282
Fair Value, Inputs, Level 2 | Corporate debentures
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,012,615	973,029
Gross unrealized gains	3,883	15,016
Gross unrealized losses	(5,560)	(343)
Estimated fair value (Level 2 within the fair value hierarchy)	1,010,939	987,702
Fair Value, Inputs, Level 2 | U.S. Treasuries
Debt Securities, Available-for-sale [Line Items]
Amortized cost	14,658	17,613
Gross unrealized gains	156	418
Gross unrealized losses	0	0
Estimated fair value (Level 2 within the fair value hierarchy)	14,815	18,031
Fair Value, Inputs, Level 2 | U.S. Government Agencies
Debt Securities, Available-for-sale [Line Items]
Amortized cost	16,005	6,546
Gross unrealized gains	0	3
Gross unrealized losses	(169)	0
Estimated fair value (Level 2 within the fair value hierarchy)	$ 15,835	$ 6,549

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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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