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Segments and Geographical Information (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]      
Total revenues $ 32,650 $ 28,932 $ 27,427
Long-lived assets [1] 1,108 651 514
Israel [Member]      
Segment Reporting Information [Line Items]      
Total revenues 22,990 21,870 20,619
Long-lived assets [1] 1,108 651 514
India [Member]      
Segment Reporting Information [Line Items]      
Total revenues 4,209 4,497 3,119
Long-lived assets [1]
Far East [Member]      
Segment Reporting Information [Line Items]      
Total revenues 3,800 1,416 2,964
Long-lived assets [1]
America [Member]      
Segment Reporting Information [Line Items]      
Total revenues 1,189 918 411
Long-lived assets [1]
Europe [Member]      
Segment Reporting Information [Line Items]      
Total revenues 462 231 314
Long-lived assets [1]
[1] Long-lived assets are comprised of property and equipment (intangible assets and goodwill are not included).