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FAIR VALUE MEASUREMENTS (Schedule of Financial Assets Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-sale marketable securities | $ 27,178 | $ 61,012
Foreign currency derivative contracts | (952) | (871)
Earn-out liability |  | (1,100)
Total financial net assets | 26,226 | 59,041
Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-sale marketable securities |  |
Foreign currency derivative contracts |  |
Earn-out liability |  |
Total financial net assets |  |
Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-sale marketable securities | 27,178 | 61,012
Foreign currency derivative contracts | (952) | (871)
Earn-out liability |  |
Total financial net assets | 26,226 | 60,141
Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-sale marketable securities |  |
Foreign currency derivative contracts |  |
Earn-out liability |  | (1,100)
Total financial net assets |  | $ (1,100)

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