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SIGNIFICANT ACCOUNTING POLICIES (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Provision for Warranty [Line Items]    
Balance, beginning of the year $ 604 $ 544
Warranties issued during the year 468 422
Settlements made during the year (145) (182)
Expirations (360) (180)
Balance end of year $ 567 $ 604