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Revenues and Cost of Revenues (Details 2) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Revenues And Cost Of Revenues      
Payroll and related expenses $ 367 $ 203 $ 158
Share-based payment 55 51 58
Amortization of intangible assets 270 245 245
Cost relating to sales as an agent 18 47 10
Other 81 37 41
Cost of revenues $ 791 $ 583 $ 512