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Note 7 - Segment, Significant Customers and Geographic Information (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Customer |  | 2025 |  | 2024 |  | 2025 |  | 2024
Distributor A |  |  | 26 | % |  |  | 24 | % |  |  | 25 | % |  |  | 33 | %
Distributor B |  |  | 18 | % |  |  | 25 | % |  |  | 18 | % |  |  | 19 | %
Distributor C |  |  | * |  |  |  | * |  |  |  | 10 | % |  |  | * |
|  | September 30, |  | December 31,
Customer |  | 2025 |  | 2024
Distributor A |  |  | 31 | % |  |  | 28 | %
Distributor B |  |  | 17 | % |  |  | 29 | %
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Country or Region |  | 2025 |  | 2024 |  | 2025 |  | 2024
China |  | $ | 393,837 |  |  | $ | 310,472 |  |  | $ | 1,155,508 |  |  | $ | 856,026 |
Taiwan |  |  | 155,978 |  |  |  | 179,747 |  |  |  | 377,289 |  |  |  | 407,593 |
South Korea |  |  | 62,882 |  |  |  | 51,815 |  |  |  | 190,747 |  |  |  | 126,865 |
Southeast Asia |  |  | 39,023 |  |  |  | 22,772 |  |  |  | 106,596 |  |  |  | 47,363 |
Europe |  |  | 33,577 |  |  |  | 25,145 |  |  |  | 85,066 |  |  |  | 61,992 |
U.S. |  |  | 29,937 |  |  |  | 13,797 |  |  |  | 63,313 |  |  |  | 42,544 |
Japan |  |  | 21,779 |  |  |  | 16,286 |  |  |  | 60,416 |  |  |  | 42,786 |
Other |  |  | 163 |  |  |  | 85 |  |  |  | 369 |  |  |  | 266 |
Total |  | $ | 737,176 |  |  | $ | 620,119 |  |  | $ | 2,039,304 |  |  | $ | 1,585,435 |
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] |
|  | September 30, |  | December 31,
Country |  | 2025 |  | 2024
China |  | $ | 308,174 |  |  | $ | 237,649 |
U.S. |  |  | 170,934 |  |  |  | 171,514 |
Taiwan |  |  | 58,764 |  |  |  | 42,388 |
Other |  |  | 59,439 |  |  |  | 43,394 |
Total |  | $ | 597,311 |  |  | $ | 494,945 |

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