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Geographic and Other Information (Tables) | 9 Months Ended
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Sep. 30, 2025
Segment Reporting [Abstract] |
Schedule of Product Categories | Revenues for the three months ended September 30, 2024 from its previous product categories have been reclassified in order to conform to the current period presentation as follows (in thousands):
|  |  | Power Analog Solutions |  |  | Power IC |  |  | Discontinued Operations |  |  | Total |
Mixed-Signal Solutions |  | $ | 16,446 |  |  | $ | — |  |  | $ | 5,420 |  |  | $ | 11,026 |  |  | $ | 16,446 |
Power Analog Solutions |  |  | 47,574 |  |  |  | 47,574 |  |  |  | — |  |  |  | — |  |  |  | 47,574 |
|  | $ | 64,020 |  |  | $ | 47,574 |  |  | $ | 5,420 |  |  | $ | 11,026 |  |  | $ | 64,020 |
Revenues for the nine months ended September 30, 2024 from its previous product categories have been reclassified in order to conform to the current period presentation as follows (in thousands):
|  |  | Power Analog Solutions |  |  | Power IC |  |  | Discontinued Operations |  |  | Total |
Mixed-Signal Solutions |  | $ | 37,047 |  |  | $ | — |  |  | $ | 13,621 |  |  | $ | 23,426 |  |  | $ | 37,047 |
Power Analog Solutions |  |  | 123,349 |  |  |  | 123,349 |  |  |  | — |  |  |  | — |  |  |  | 123,349 |
|  | $ | 160,396 |  |  | $ | 123,349 |  |  | $ | 13,621 |  |  | $ | 23,426 |  |  | $ | 160,396 |
Schedule of Operating Segments | The following sets forth information relating to the operating segment, Power solutions business, as well as the transitional Fab 3 foundry services (in thousands). For financial information below gross profit, including operating income and expenses as well as other income and expenses, please refer to the Company’s consolidated statements of operations.
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, 2025 |  |  | September 30, 2024 |  |  | September 30, 2025 |  |  | September 30, 2024 |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Power solutions business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Power Analog Solutions |  | $ | 41,548 |  |  | $ | 47,574 |  |  | $ | 123,666 |  |  | $ | 123,349 |
Power IC |  |  | 4,398 |  |  |  | 5,420 |  |  |  | 14,624 |  |  |  | 13,621 |
Total Power solutions business |  |  | 45,946 |  |  |  | 52,994 |  |  |  | 138,290 |  |  |  | 136,970 |
Transitional Fab 3 foundry services |  |  | — |  |  |  | 2,440 |  |  |  | — |  |  |  | 8,302 |
Total revenues |  | $ | 45,946 |  |  | $ | 55,434 |  |  | $ | 138,290 |  |  | $ | 145,272 |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, 2025 |  |  | September 30, 2024 |  |  | September 30, 2025 |  |  | September 30, 2024 |
Cost of Sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Power solutions business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Power Analog Solutions |  | $ | 34,906 |  |  | $ | 38,325 |  |  | $ | 102,215 |  |  | $ | 100,751 |
Power IC |  |  | 2,499 |  |  |  | 3,004 |  |  |  | 8,460 |  |  |  | 7,603 |
Total Power solutions business |  |  | 37,405 |  |  |  | 41,329 |  |  |  | 110,675 |  |  |  | 108,354 |
Transitional Fab 3 foundry services |  |  | — |  |  |  | 2,599 |  |  |  | — |  |  |  | 9,267 |
Total cost of sales |  | $ | 37,405 |  |  | $ | 43,928 |  |  | $ | 110,675 |  |  | $ | 117,621 |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, 2025 |  |  | September 30, 2024 |  |  | September 30, 2025 |  |  | September 30, 2024 |
Gross Profit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Power solutions business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Power Analog Solutions |  | $ | 6,642 |  |  | $ | 9,249 |  |  | $ | 21,451 |  |  | $ | 22,598 |
Power IC |  |  | 1,899 |  |  |  | 2,416 |  |  |  | 6,164 |  |  |  | 6,018 |
Total Power solutions business |  |  | 8,541 |  |  |  | 11,665 |  |  |  | 27,615 |  |  |  | 28,616 |
Transitional Fab 3 foundry services |  |  | — |  |  |  | (159 | ) |  |  | — |  |  |  | (965 | )
Total gross profit |  | $ | 8,541 |  |  | $ | 11,506 |  |  | $ | 27,615 |  |  | $ | 27,651 |
Net Sales by Region, Based on Location of Products are Billed | The following is a summary of net sales – Power solutions business by geographic region, based on the location to which the products are billed (in thousands):
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, 2025 |  |  | September 30, 2024 |  |  | September 30, 2025 |  |  | September 30, 2024 |
Korea |  | $ | 23,269 |  |  | $ | 22,893 |  |  | $ | 67,706 |  |  | $ | 59,867 |
Asia Pacific (other than Korea) |  |  | 20,308 |  |  |  | 28,189 |  |  |  | 63,745 |  |  |  | 71,879 |
United States |  |  | 1,137 |  |  |  | 667 |  |  |  | 3,789 |  |  |  | 1,313 |
Europe |  |  | 1,232 |  |  |  | 1,245 |  |  |  | 3,050 |  |  |  | 3,911 |
Total |  | $ | 45,946 |  |  | $ | 52,994 |  |  | $ | 138,290 |  |  | $ | 136,970 |

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