Significant Accounting Policies (Details 7) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Stock-based compensation expense	$ 90	$ 108	$ 142	$ 484
Cost of Sales [Member] | Service [Member]
Stock-based compensation expense	18	17	26	38
Research and Development Expense [Member]
Stock-based compensation expense	8	10	15	24
Selling and Marketing Expense [Member]
Stock-based compensation expense	12	7	24	26
General and Administrative Expense [Member]
Stock-based compensation expense	52	74	77	396
Stock Options [Member]
Stock-based compensation expense	37	32	70	320
Employee Stock Purchase Plan [Member]
Stock-based compensation expense	13	6	13	11
RSUs [Member]
Stock-based compensation expense	$ 40	$ 70	$ 59	$ 153