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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2022
Concentration risk |
Revenue from external customer by geographic regions | Revenue from customers in the geographic regions based on the location of contracting parties was as follows:
|  | Years Ended December 31,
(In thousands) |  | 2022 |  | 2021 |  | 2020
USA |  | $ | 277,776 |  |  | $ | 211,419 |  |  | $ | 137,614 |
Singapore |  | 57,309 |  |  | 39,798 |  |  | 28,034 |
Asia-Other |  | 54,421 |  |  | 28,949 |  |  | 26,249 |
Taiwan |  | 35,116 |  |  | 23,953 |  |  | 21,803 |
Japan |  | 16,516 |  |  | 14,894 |  |  | 20,437 |
South Korea |  | 7,222 |  |  | 6,007 |  |  | 3,664 |
Europe |  | 6,213 |  |  | 3,165 |  |  | 7,359 |
Canada |  | 220 |  |  | 119 |  |  | 1,162 |
Total |  | $ | 454,793 |  |  | $ | 328,304 |  |  | $ | 246,322 |
Accounts receivable |
Concentration risk |
Schedule of customer accounts representing 10% or more than 10% of total balance | Accounts receivable from the Company’s major customers representing 10% or more of total accounts receivable at December 31, 2022 and 2021, respectively, was as follows:
|  | As of December 31,
Customer |  | 2022 |  | 2021
Customer 1 |  | 23 | % |  | 17 | %
Customer 2 |  | 16 | % |  | *
Customer 3 |  | 14 | % |  | 19 | %
_________________________________________ * Customer accounted for less than 10% of total accounts receivable in the period.
Revenue |
Concentration risk |
Schedule of customer accounts representing 10% or more than 10% of total balance | Revenue from the Company’s major customers representing 10% or more of total revenue for the years ended December 31, 2022, 2021 and 2020, respectively, was as follows:
|  | Years Ended December 31,
Customer |  | 2022 |  | 2021 |  | 2020
Customer A |  | 19 | % |  | 21 | % |  | 12 | %
Customer B |  | 17 | % |  | 13 | % |  | *
Customer C |  | 14 | % |  | 11 | % |  | 15 | %
_________________________________________ * Customer accounted for less than 10% of total revenue in the period.

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