Information about Geographic Areas (Tables)
12 Months Ended
Dec. 31, 2013
Segments, Geographical Areas [Abstract]  
Schedule of revenue by geographic area
Revenue by geography is based on the billing address of the customer. The following table sets forth revenue by geographic area (in thousands):
 
Years Ended December 31,
 
2013
 
2012
 
2011
United States
$
47,752

 
$
51,045

 
$
35,573

Japan
12,691

 
13,594

 
15,148

APAC other
2,958

 
2,066

 
2,934

Europe and Middle East
4,005

 
122

 
175

Total
$
67,406

 
$
66,827

 
$
53,830