MARKETABLE SECURITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 203,659	$ 293,341
Unrealized Gains	2	88
Unrealized Losses	(847)	(160)
Fair Value	202,814	293,269
Government debt
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,000	39,996
Unrealized Gains	0	0
Unrealized Losses	(10)	(8)
Fair Value	1,990	39,988
Corporate debt
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	201,659	253,345
Unrealized Gains	2	88
Unrealized Losses	(837)	(152)
Fair Value	$ 200,824	$ 253,281

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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