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Geographic Information and Concentrations of Risk
3 Months Ended
Mar. 31, 2019
Segment Reporting [Abstract]  
Geographic Information and Concentrations of Risk
Geographic Information and Concentrations of Risk
Geographic Information
The following table details the Company’s net revenues by geographic region based on shipping destination (in thousands):
 
Three Months Ended
March 31,
 
2019
 
2018
United States and Canada
$
33,494

 
$
30,106

South Africa
8,369

 
10,685

Other
6,693

 
5,942

Total
$
48,556

 
$
46,733


Concentrations of Risk
For the three months ended March 31, 2019, one customer accounted for 53.3% of net revenues. For the three months ended March 31, 2018, one customer accounted for 48.9% of net revenues.
As of March 31, 2019, one customer accounted for 38.6% of accounts receivable, net. As of December 31, 2018, two customers accounted for 30.5% and 12.8% of accounts receivable, net.