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Product and Geographic Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Segment Reporting [Abstract] |
Breakdown of Product Net Sales | The following table provides a breakdown of product net sales for the years indicated (in thousands):
| Year ended December 31,
| 2020 |  | 2019 |  |
Commercial products | $ | 5,404 |  |  | $ | 7,877 |  |  |
MMM products | 11,424 |  |  | 4,828 |  |  |
Total net sales | $ | 16,828 |  |  | $ | 12,705 |  |  |
Geographic Summary of Net Sales | A geographic summary of net sales is as follows (in thousands):
| For the year ended December 31,
| 2020 |  | 2019 |  |
United States | $ | 16,685 |  |  | $ | 12,599 |  |  |
International | 143 |  |  | 106 |  |  |
Total net sales | $ | 16,828 |  |  | $ | 12,705 |  |  |

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