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INCOME TAXES (Details 2) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Deferred tax assets: |  |  |  |
Carry forward tax losses | $ 41,941 | $ 35,051 |  |
Research and development carry forward expenses-temporary differences | 946 | 1,294 |  |
Accrual and reserves | 341 | 290 |  |
Lease liabilities | 390 | 433 |  |
Total deferred tax asset | 43,618 | 37,068 |  |
Deferred tax liabilities: |  |  |  |
Right-of-use liability | (390) | (433) |  |
Net deferred tax assets | 43,228 | 36,635 |  |
Valuation allowance | (42,941) | (36,392) | $ (29,655) | $ (26,311)
Net deferred tax assets | $ 287 | $ 243 |  |

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