Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenues		$ 9,181	$ 9,711	$ 18,830	$ 19,366
Cost of revenues		3,778	3,789	7,376	7,789
Gross profit		5,403	5,922	11,454	11,577
Operating expenses:
Research and development, net		4,151	4,297	7,495	8,474
Sales and marketing		3,146	3,590	6,182	7,446
General and administrative		2,476	2,398	4,690	4,830
Total operating expenses		9,773	10,285	18,367	20,750
Operating loss		(4,370)	(4,363)	(6,913)	(9,173)
Other income, net		2	17	8	265
Financial expenses, net	[1]	(290)	(268)	(521)	(321)
Loss before taxes on income		(4,658)	(4,614)	(7,426)	(9,229)
Tax benefit		44	41	61	80
Loss		$ (4,614)	$ (4,573)	$ (7,365)	$ (9,149)
Basic and diluted loss per share		$ (0.08)	$ (0.08)	$ (0.12)	$ (0.17)
Weighted average number of shares used in computing basic and diluted loss per share		60,041	54,424	59,862	54,300

[1] This market represents customers who embed Cyren Threat Detection Services and Threat Intelligence Feeds into their infrastructure and/or products to protect their customers and users.