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Segment, Geographical and Other Revenue Information (Tables)
12 Months Ended
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,
 202320222021
Customer A22 %56 %33 %
Customer B13 %**
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,
 20232022
Customer A*53 %
Customer B*10 %
Customer C12 %*
Customer D21 %*
Customer E13 %*
Customer F12 %*
* 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,
202320222021
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,
 20232022
United States$28,624 $61,877 
Schedule of Intangible Assets and Goodwill
Identifiable goodwill was as follows (in thousands):
December 31,
20232022
Goodwill at beginning of period
$3,241 $3,241 
Impairment(778)— 
Goodwill at end of period
$2,463 $3,241