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Segment, Geographical and Other Revenue Information (Tables) | 12 Months Ended
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Dec. 31, 2023
Segment Reporting [Abstract] |
Schedule of Customers That Contributed 10% or More of Total Accounts Receivable | Customers that each accounted for 10% or more of our total revenues were as follows:
| Percentage of Total Revenues For the Year Ended December 31,
| 2023 |  | 2022 |  | 2021
Customer A | 22 | % |  | 56 | % |  | 33 | %
Customer B | 13 | % |  | * |  | *
Customer C | * |  | * |  | 11 | %
* Percentage was less than 10% |  |  |  |  |
Customers that each accounted for 10% or more of accounts receivable balances as of the periods presented are as follows:
| As of December 31,
| 2023 |  | 2022
Customer A | * |  | 53 | %
Customer B | * |  | 10 | %
Customer C | 12 | % |  | *
Customer D | 21 | % |  | *
Customer E | 13 | % |  | *
Customer F | 12 | % |  | *
* Percentage was less than 10% |  |  |
Schedule of Revenues by Geographical Area | Geographic revenues are identified by the location of the customer and consist of the following (in thousands):
| Year Ended December 31,
| 2023 |  | 2022 |  | 2021
Revenues |  |  |  |  |
Americas(1) | $ | 13,733 |  |  | $ | 17,000 |  |  | $ | 23,481 |
EMEA(2)(3) | 22,907 |  |  | 56,540 |  |  | 20,187 |
APAC(4) | 33,503 |  |  | 65,050 |  |  | 61,086 |
Total revenues | $ | 70,143 |  |  | $ | 138,590 |  |  | $ | 104,754 |
(1) United States revenue was $13.7 million, $17.0 million, and $23.4 million, for the years ended December 31, 2023, 2022, and 2021, respectively. (2) Ireland revenue was $0.5 million, $37.2 million, and $1.4 million, for the years ended December 31, 2023, 2022, and 2021, respectively. (3) Switzerland revenue was $11.1 million, $9.2 million, and $10.1 million, for the for the years ended December 31, 2023, 2022, and 2021, respectively. (4) China revenue was $20.3 million, $48.6 million, and $43.5 million, for the years ended December 31, 2023, 2022, and 2021, respectively.
Schedule of Long-lived Assets by Geographical Area | Identifiable long-lived assets by location was as follows (in thousands):
| December 31,
| 2023 |  | 2022
United States | $ | 28,624 |  |  | $ | 61,877 |
Schedule of Intangible Assets and Goodwill | Identifiable goodwill was as follows (in thousands):
| December 31,
| 2023 |  | 2022
Goodwill at beginning of period | $ | 3,241 |  |  | $ | 3,241 |
Impairment | (778) |  |  | — |
Goodwill at end of period | $ | 2,463 |  |  | $ | 3,241 |

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