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Note 17 - Geographic Information (Tables) | 6 Months Ended
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Jun. 30, 2023
Notes Tables |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Three months ended June 30, |  |  | Six months ended June 30, |
​ |  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Revenues: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
United States |  | $ | 2,702 |  |  | $ | 1,147 |  |  | $ | 9,141 |  |  | $ | 3,705 |
Taiwan |  |  | 34,271 |  |  |  | 37,205 |  |  |  | 76,657 |  |  |  | 64,984 |
China |  |  | 4,642 |  |  |  | 13,947 |  |  |  | 8,847 |  |  |  | 35,851 |
​ |  | $ | 41,615 |  |  | $ | 52,299 |  |  | $ | 94,645 |  |  | $ | 104,540 |
Long-Lived Assets by Geographic Areas [Table Text Block] |
|  | As of the period ended |
​ |  | June 30, |  |  | December 31, |
​ |  | 2023 |  |  | 2022 |
Long-lived assets: |  | ​ |  |  | ​ |
United States |  | $ | 76,605 |  |  | $ | 80,048 |
Taiwan |  |  | 47,002 |  |  |  | 50,777 |
China |  |  | 88,193 |  |  |  | 93,888 |
​ |  | $ | 211,800 |  |  | $ | 224,713 |

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- Definition Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph b -SubTopic 10 -Topic 280 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 + Details
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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph a -SubTopic 10 -Topic 280 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 + Details
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