Significant Customer and Geographic Information - Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of revenues by geographical area
Revenues	$ 41,804	$ 35,307	$ 31,922
United States
Schedule of revenues by geographical area
Revenues	24,795	16,136	11,005
Europe
Schedule of revenues by geographical area
Revenues	14,151	15,067	9,568
India
Schedule of revenues by geographical area
Revenues	1,026	919	3,099
Singapore
Schedule of revenues by geographical area
Revenues	963	1,435	7,220
Other Asian Countries
Schedule of revenues by geographical area
Revenues	864	1,637	1,030
Others
Schedule of revenues by geographical area
Revenues	$ 5	$ 113	$ 0