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SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Significant Accounting Policies [Line Items]
Income tax benefit realization threshold	50.00%
Warranty income (expense)	$ (83)	$ 437	$ 252
Warranty provision	2,106	2,023
Trade receivables sold	6,968	19,797
Accrued severance pay	7,409	7,962
Financial expense related to factoring arrangements	585	553	536
Severance expense	$ 2,107	$ 1,852	$ 1,662
Outstanding options excluded from the calculations of diluted net earnings per share due to their anti-dilutive effect	2,426,689	4,668,032	3,848,290
Impairment of long lived assets
Lease assets current	7,000
Lease liabilities current	$ 7,000
Maximum [Member]
Significant Accounting Policies [Line Items]
Warranty period	3 years
Minimum [Member]
Significant Accounting Policies [Line Items]
Warranty period	1 year

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Financial expense related to factoring arrangements.

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Income tax benefit, more-likely-than-not threshold for realization, percentage.

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Severance expense

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Significant Accounting Policies [Line Items]

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Standard Product Warranty Period

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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-Name Accounting Standards Codification
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-Section 50
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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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Amount of lessee's right to use underlying asset under finance lease.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Amount of obligations incurred for employer-related costs classified as other.

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Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

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Amount of increase (decrease) in the standard product warranty accrual. Excludes extended product warranties.

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Represents the initial fair value recorded for assets received on transfer of financial assets in a securitization, asset-backed financing arrangement, or a similar transfer which transaction is recognized as a sale of the transferred financial assets.

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