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TAXES ON INCOME (Schedule of the Reconciliation of the Theoretical Tax Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |
Loss before taxes on income | $ (7,172) | $ (7,018) | $ (7,987)
Theoretical tax income computed at the Israeli statutory tax rate (23% for the years 2020, 2019 and 2018, respectively) | (1,650) | (1,614) | (1,837)
Changes in valuation allowance | 1,979 | 951 | 1,189
Increase in losses and temporary differences due to change in Israeli corporate and "Approved Enterprise" tax |  |  | 659
Write off of prepaid and withholding taxes | 1,066 | 1,536 | 1,828
Foreign tax rates differences related to subsidiaries | 35 | 44 | 50
Non-deductible expenses | 72 | 470 | 147
Other expenses and Exchange rate differences | (383) | (143) | (82)
Non-deductible share-based compensation expense | 557 | 397 | 474
Change in expense associated with tax positions for current year | 500 |  |
Income tax expense | $ 2,176 | $ 1,641 | $ 2,428
Israeli Income tax rate | 23.00% | 23.00% | 23.00%

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