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Segment and Geographic Information
 9 Months Ended
Sep. 30, 2018
Segment Reporting [Abstract]  
Segment and Geographic Information
Segment and Geographic Information
The following table sets forth the Company’s revenue by geographic areas based on the customers’ locations:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2018
 
2017
 
2018
 
2017
 
 
 
 
 
 
 
 
 
(unaudited)
 
(in thousands)
United States
$
17,932

 
$
9,607

 
$
47,389

 
$
26,224

International(1)
3,760

 
1,525

 
10,377

 
3,616

Total revenue
$
21,692

 
$
11,132


$
57,766

 
$
29,840

(1)
No single country outside of the United States accounted for more than 10% of total revenue during three and nine months ended September 30, 2018 and 2017, except for Germany which accounted for 10% of total revenue during the three months ended September 30, 2018.
As of September 30, 2018 and December 31, 2017, all of the Company’s long-lived assets are located in the United States.