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Deferred Taxes and Other Long-Term Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Deferred Revenue and Credits, Noncurrent [Abstract]    
Provision for warranty $ 138 $ 199
Deferred tax 133 540
Deferred revenues 89 99
Other long-term liabilities $ 360 $ 838