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Note R - Segment and Geographic Information (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Year ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 7,423 |  |  | $ | 14,633 |  |  | $ | 18,380 |
Taiwan |  |  | 164,144 |  |  |  | 99,201 |  |  |  | 131,076 |
China |  |  | 51,251 |  |  |  | 97,731 |  |  |  | 85,167 |
|  | $ | 222,818 |  |  | $ | 211,565 |  |  | $ | 234,623 |
Long-Lived Assets by Geographic Areas [Table Text Block] |
|  | As of December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Long-lived assets: |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 80,048 |  |  | $ | 87,709 |  |  | $ | 90,999 |
Taiwan |  |  | 50,777 |  |  |  | 63,644 |  |  |  | 71,080 |
China |  |  | 93,888 |  |  |  | 108,509 |  |  |  | 108,575 |
|  | $ | 224,713 |  |  | $ | 259,862 |  |  | $ | 270,654 |

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