Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenues	$ 4,873	$ 6,545	$ 7,753
Cost of revenues	2,147	3,720	4,652
Gross profit	2,726	2,825	3,101
Operating expenses:
Research and development, net	5,348	7,349	6,042
Sales and marketing	6,167	7,897	11,360
General and administrative	5,259	6,793	7,691
Total operating expenses	16,774	22,039	25,093
Operating loss	(14,048)	(19,214)	(21,992)
Loss on extinguishment of debt			313
Financial expenses, net	1,496	2,466	2,293
Loss before income taxes	(15,544)	(21,680)	(24,598)
Income taxes (tax benefit)	7	(5)	119
Net loss	$ (15,551)	$ (21,675)	$ (24,717)
Net loss per ordinary share, basic and diluted	$ (2.70)	$ (14.72)	$ (30.57)
Weighted average number of shares used in computing net loss per ordinary share, basic and diluted	5,763,317	1,472,499	808,557