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Other Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]    
Royalties - IIA payable $ 761 $ 1,096
Commissions to distributors 430 429
Accrued expenses 1,090 1,903
Total $ 2,281 $ 3,428