Significant Customer and Geographic Information (Revenues by Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule of revenues by geographical area
Total revenues	$ 7,971	$ 7,996
United States [Member]
Schedule of revenues by geographical area
Total revenues	1,732	4,095
Singapore [Member]
Schedule of revenues by geographical area
Total revenues	1,346	955
India
Schedule of revenues by geographical area
Total revenues	749	1,023
Other Asian Countries [Member]
Schedule of revenues by geographical area
Total revenues	880	225
Slovenia [Member]
Schedule of revenues by geographical area
Total revenues	1,632	579
Other European Countries [Member]
Schedule of revenues by geographical area
Total revenues	1,575	1,119
Others [Member]
Schedule of revenues by geographical area
Total revenues	$ 57	$ 0