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Balances and Transactions with Related Parties (Details) - Affiliated Entity [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Related Party Transaction [Line Items]      
Due from related parties $ 133 $ 681  
Purchases from related parties 15 $ 3
Interest (expense) from Parent $ 10 $ 22 $ (28)
Interest rate, related party 5.50% 5.50% 5.50%