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Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2023
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:
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
(In thousands) |  | 2023 |  | 2022 |  | 2023 |  | 2022
USA |  | $ | 35,429 |  |  | $ | 67,285 |  |  | $ | 99,068 |  |  | $ | 122,969 |
South Korea |  | 48,613 |  |  | 2,572 |  |  | 62,757 |  |  | 4,037 |
Singapore |  | 14,718 |  |  | 25,719 |  |  | 26,046 |  |  | 39,764 |
Taiwan |  | 4,279 |  |  | 10,499 |  |  | 10,788 |  |  | 15,459 |
China |  | 3,399 |  |  | 7,600 |  |  | 7,654 |  |  | 15,805 |
Other |  | 13,394 |  |  | 7,457 |  |  | 27,281 |  |  | 22,148 |
Total |  | $ | 119,832 |  |  | $ | 121,132 |  |  | $ | 233,594 |  |  | $ | 220,182 |
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 June 30, 2023 and December 31, 2022, respectively, was as follows:
|  | As of
Customer |  | June 30, 2023 |  | December 31, 2022
Customer 1 |  | 64 | % |  | *
Customer 2 |  | * |  | 23 | %
Customer 3 |  | * |  | 16 | %
Customer 4 |  | * |  | 14 | %
_________________________________________ * 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 three and six months ended June 30, 2023 and 2022, respectively, was as follows:
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
Customer |  | 2023 |  | 2022 |  | 2023 |  | 2022
Customer A |  | 38 | % |  | * |  | 25 | % |  | *
Customer B |  | 12 | % |  | 19 | % |  | 15 | % |  | 21 | %
Customer C |  | * |  | 17 | % |  | * |  | 13 | %
Customer D |  | * |  | 13 | % |  | * |  | 13 | %
__________________________________________ * Customer accounted for less than 10% of total revenue in the period.

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