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Concentration of Risk
9 Months Ended
Sep. 30, 2021
Concentration of Risk  
Concentration of Risk

Note 14.  Concentration of Risk

For the three months ended September 30, 2021, one customer accounted for 26.7% of total revenue. For the three months ended September 30, 2020, three customers accounted for 16.8%, 11.2% and 10.3% of total revenue, respectively.

For the nine months ended September 30, 2021, two customers accounted for 18.5% and 14.1% of total revenue, respectively. For the nine months ended September 30, 2020, three customers accounted for 18.8%, 15.2% and 12.1% of total revenue, respectively.

At September 30, 2021, one customer accounted for 32.2% of accounts receivable. At December 31, 2020, two customers accounted for 23.8% and 11.9% of accounts receivable, respectively.