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MARKETABLE SECURITIES (Schedule of amortized cost, unrealized gains and losses, and fair value of available-for-sale) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Marketable Securities [Line Items]    
Amortized cost $ 542,964 $ 501,377
Gross unrealized losses (14,229) [1] (1,747) [2]
Gross unrealized gains 114 965
Fair value 528,849 500,595
Available-for-sale securities, continuous unrealized loss position for twelve months or longer 8,450 16
Corporate debentures [Member]    
Marketable Securities [Line Items]    
Amortized cost 414,278 453,927
Gross unrealized losses (12,223) [1] (1,493) [2]
Gross unrealized gains 111 881
Fair value 402,166 453,315
Government debentures [Member]    
Marketable Securities [Line Items]    
Amortized cost 128,686 47,450
Gross unrealized losses (2,006) [1] (254) [2]
Gross unrealized gains 3 84
Fair value $ 126,683 $ 47,280
[1] Out of the total unrealized losses, an amount of $8,450 has been in a continuous unrealized loss position for twelve months or longer.
[2] Out of the total unrealized losses, an amount of $16 has been in a continuous unrealized loss position for twelve months or longer.