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SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Significant Accounting Policies [Line Items] |  |  |
Income tax benefit realization threshold | 50.00% |  |
Intangible assets useful lives | 7 years |  |
Warranty income (expense) | $ 654 | $ (83) | $ 437
Warranty provision | 1,452 | 2,106 |
Trade receivables sold | 10,422 | 6,968 |
Accrued severance pay | 8,539 | 7,409 |
Financial expense related to factoring arrangements | 506 | 585 | 553
Severance expense | $ 2,336 | $ 2,107 | $ 1,852
Outstanding options and RSU's excluded from the calculations of diluted net earnings per share due to their anti-dilutive effect | 3,473,312 | 2,426,689 | 4,668,032
Impairment of long lived assets |  |  |
Minimum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Warranty period | 1 year |  |
Maximum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Warranty period | 3 years |  |

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