Segment and Geographic Information (Details 1) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers		$ 9,181	$ 9,711	$ 18,830	$ 19,366
OEM/Embedded Security [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers	[1]	7,511	7,881	15,417	15,673
Enterprise/SMB [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers	[2]	$ 1,670	$ 1,830	$ 3,413	$ 3,693

[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.

[2] In this market, Cyren provides enterprise customers email security products, threat intelligence and cloud-based sandbox threat analysis to protect their employees, data and IP.