Shareholders' Equity (Details 5) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Non-cash share-based compensation expense	$ 319	$ 796
Cost of revenues [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Non-cash share-based compensation expense	4	4
Research and development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Non-cash share-based compensation expense	61	114
Sales and marketing, net [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Non-cash share-based compensation expense	72	155
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Non-cash share-based compensation expense	$ 182	$ 523