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TAXES ON INCOME (Schedule of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |
Current taxes | $ 513 | $ 341 | $ 580
Deferred taxes expense (benefit) | 97 | (236) | 20
Write off of prepaid and withholding taxes | 1,066 | 1,536 | 1,828
Change in expense associated with tax positions for current year | 500 |  |
Income tax expense | $ 2,176 | $ 1,641 | $ 2,428

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