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Information about Geographic Areas (Tables)
 3 Months Ended
Mar. 31, 2016
Segment Reporting [Abstract]  
Classification of Revenue by Geography
Total revenue by geography was as follows (in thousands):
            
 
Three Months Ended March 31,
 
2016
 
2015
Americas
$
10,083

 
$
7,523

Europe & Middle East
2,853

 
2,943

Asia Pacific
1,761

 
1,127

Total revenue
$
14,697

 
$
11,593