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Significant Customers, Concentrations of Credit Risk and Geographic Information (Tables) | 12 Months Ended
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Dec. 31, 2022
Significant Customers, Concentrations of Credit Risk and Geographic Information |
Schedule of net revenues from customers | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31, |
​ |  | 2022 |  | 2021 |
Customer A |  | 25 | % | 15 | %
Customer B |  | * | % | 17 | %
Customer C |  | 18 | % | * | %
Customer D |  | * | % | 15 | %
​
Schedule of net revenues by geographical area | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31,
​ |  | 2022 |  | 2021
​ |  | (in thousands)
United States | ​ | $ | 3,367 | ​ | $ | 2,185
Asia and Middle East | ​ |  | 3,670 | ​ |  | 4,724
Europe and other | ​ |  | 456 | ​ |  | 569
Revenue, net | ​ | $ | 7,493 | ​ | $ | 7,478
​
Schedule of assets by geographical area | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ |  | 2022 |  | 2021
​ |  | (in thousands)
United States | ​ | $ | 935 | ​ | $ | 536
Asia | ​ |  | 344 | ​ |  | 176
Total long-lived assets | ​ | $ | 1,279 | ​ | $ | 712

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