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Segment Disclosure (Details 1) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Revenues Information by Geography    
Revenues [1] $ 7,837 $ 7,703
Americas    
Revenues Information by Geography    
Revenues 3,496 3,250
EMEA    
Revenues Information by Geography    
Revenues 2,541 2,606
APJ    
Revenues Information by Geography    
Revenues $ 1,800 $ 1,847
[1] Represents the portfolio of available for sale securities that is included in restricted investments and short-term investments in the Company’s condensed consolidated balance sheets