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Entity Level Information (Tables) | 6 Months Ended
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Jun. 30, 2020
Segment Reporting [Abstract] |
Summary of Revenue by Region | The following table summarizes the revenue by region based on ship-to destinations for the three and six months ended June 30, 2020 and 2019:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30 |  |  | June 30 |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
U.S |  | $ | 17,478 |  |  | $ | 35,125 |  |  | $ | 25,696 |  |  | $ | 55,232 |
Canada and Latin America |  |  | 2,579 |  |  |  | 5,662 |  |  |  | 6,658 |  |  |  | 9,290 |
Europe and Middle East |  | 446 |  |  |  | 2,210 |  |  | 794 |  |  |  | 4,010 |
Asia Pacific |  | 555 |  |  | 750 |  |  | 616 |  |  |  | 1,699 |
Total revenues |  | $ | 21,058 |  |  | $ | 43,747 |  |  | $ | 33,764 |  |  | $ | 70,231 |
Composition of Revenues | The composition of revenues for the three months ended June 30, 2020 and 2019 is follows:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30 |  |  | June 30 |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Product Sales |  | $ | 21,042 |  |  | $ | 43,609 |  |  | $ | 33,737 |  |  | $ | 69,941 |
Services |  | 16 |  |  | 138 |  |  | 27 |  |  | 290 |
Total revenues |  | $ | 21,058 |  |  | $ | 43,747 |  |  | $ | 33,764 |  |  | $ | 70,231 |
Percentage of Total Revenues | Revenue from customers with concentration greater than 10% in the three and six months ended June 30, 2020 and 2019 accounted for approximately the following percentage of total revenues:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Customer A |  | * |  |  | 32% |  |  | * |  |  | 34% |
Customer B |  | 58% |  |  | * |  |  | 46% |  |  | * |
Customer C |  | * |  |  | 25% |  |  | * |  |  | 20% |
Customer D |  | * |  |  | * |  |  | 12% |  |  | * |
Customer E |  | * |  |  | 10% |  |  | * |  |  | * |
* | Customer revenue did not exceed 10% in the respective periods.

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