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Entity Level Information (Tables) | 3 Months Ended
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Mar. 31, 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 months ended March 31, 2020 and 2019:
|  | 2020 |  |  | 2019 |
U.S |  | $ | 8,218 |  |  | $ | 20,090 |
Canada and Latin America |  |  | 4,079 |  |  |  | 3,645 |
Europe and Middle East |  |  | 348 |  |  |  | 1,800 |
Asia Pacific |  |  | 61 |  |  |  | 949 |
|  | $ | 12,706 |  |  | $ | 26,484 |
Composition of Revenues | The composition of revenues for the three months ended March 31, 2020 and 2019 is follows:
|  | 2020 |  |  | 2019 |
Product Sales |  | $ | 12,695 |  |  | $ | 26,332 |
Services |  |  | 11 |  |  |  | 152 |
Total revenues |  | $ | 12,706 |  |  | $ | 26,484 |
Percentage of Total Revenues | Revenue from customers with concentration greater than 10% in the three months ended March 31, 2020 and 2019 accounted for approximately the following percentage of total revenues:
|  | 2020 |  |  | 2019 |
Customer A |  | 25% |  |  | * |
Customer B |  | 17% |  |  | * |
Customer C |  | 17% |  |  | 13% |
Customer D |  | 12% |  |  | * |
Customer E |  | * |  |  | 37% |
Customer F |  | * |  |  | 14% |
* | Customer revenue did not exceed 10% in the respective periods.

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