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Other Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Other Accounts Payable and Accrued Expenses [Abstract]    
Royalties - IIA payable $ 1,096 $ 938
Commissions to distributors 429 333
Accrued expenses 1,903 810
Other payables and accrued expenses, total $ 3,428 $ 2,081