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Significant Accounting Policies (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Balance, beginning of the year $ 567 $ 604
Warranties issued during the year 346 468
Settlements made during the year (118) (145)
Expirations (351) (360)
Balance end of year $ 444 $ 567