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Geographic Information and Concentrations of Risk
 6 Months Ended
Jun. 30, 2021
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
June 30,		Six Months Ended
June 30,
2021202020212020
United States and Canada$51,473 $69,080 $94,209 $111,430 
South Africa7,790 5,856 14,898 14,094 
Other6,430 5,753 14,183 12,005 
Total$65,693 $80,689 $123,290 $137,529 
Concentrations of Risk
For the three months ended June 30, 2021, two customers accounted for 68.0% of net revenues. For the three months ended June 30, 2020, one customer accounted for 55.6% of net revenues.
For the six months ended June 30, 2021, two customers accounted for 65.1% of net revenues. For the six months ended June 30, 2020, one customer accounted for 54.7% of net revenues. As of June 30, 2021 two customers and one vendor accounted for 35.6%, 12.9%, and 11.3% of accounts receivable, net, respectively. As of December 31, 2020, two customers accounted for 33.3% and 17.2% of accounts receivable, net, respectively.