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v3.25.3

Operating Segments and Enterprise-Wide Information - Operating Results by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 27, 2025 | Sep. 28, 2024 | Sep. 27, 2025 | Sep. 28, 2024
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 202,676 | $ 207,917 | $ 569,830 | $ 574,116
Cost of revenues | 122,050 | 123,212 | 351,743 | 339,773
Gross profit | $ 80,626 | $ 84,705 | $ 218,087 | $ 234,343
Gross margin | 39.80% | 40.70% | 38.30% | 40.80%
Research and development | $ 28,686 | $ 31,243 | $ 85,279 | $ 91,434
Selling Expense | 12,618 | 14,004 | 37,619 | 40,404
Marketing Expense | 4,622 | 4,149 | 13,876 | 15,921
Net Contribution | 34,700 | 35,309 | 81,313 | 86,584
General and Administrative Expense | 15,731 | 17,454 | 46,412 | 50,235
Factory start-up costs | 964 | 0 | 1,321 | 0
Gain (loss) on disposition of business | 0 | 0 | 0 | 20,581
Operating Income (Loss) | 18,005 | 17,855 | 33,580 | 56,930
Other income (expense), net | 444 | (558) | 1,328 | 322
Income before income taxes and equity investment | 20,425 | 20,947 | 42,843 | 67,473
Interest income, net | 1,976 | 3,650 | 7,935 | 10,221
Systems |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 36,296 | 35,743 | 104,822 | 98,449
Probe Cards |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 166,380 | 172,174 | 465,008 | 475,667
Probe Cards | Systems |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 0 | 0 | 0 | 0
Systems |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 36,296 | 35,743 | 104,822 | 98,449
Systems | Systems |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 36,296 | 35,743 | 104,822 | 98,449
Operating segments | Probe Cards |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 166,380 | 172,174 | 465,008 | 475,667
Cost of revenues | 98,451 | 99,319 | 283,396 | 276,782
Gross profit | $ 67,929 | $ 72,855 | $ 181,612 | $ 198,885
Gross margin | 40.80% | 42.30% | 39.10% | 41.80%
Research and development | $ 21,785 | $ 23,259 | $ 63,815 | $ 67,817
Selling Expense | 7,621 | 8,198 | 21,368 | 23,771
Marketing Expense | 1,620 | 1,873 | 4,798 | 6,698
Net Contribution | 36,903 | 39,525 | 91,631 | 100,599
Operating segments | Systems |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 36,296 | 35,743 |  |
Cost of revenues | 21,052 | 20,905 | 60,792 | 54,928
Gross profit | $ 15,244 | $ 14,838 | $ 44,030 | $ 43,521
Gross margin | 42.00% | 41.50% | 42.00% | 44.20%
Research and development | $ 4,404 | $ 5,166 | $ 13,633 | $ 15,572
Selling Expense | 3,445 | 4,363 | 10,529 | 12,123
Marketing Expense | 1,803 | 1,847 | 5,426 | 5,331
Net Contribution | 5,592 | 3,462 | 14,442 | 10,495
Operating segments | Corporate and Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues |  |  | 0 | 0
Gross profit |  |  | (7,555) | (8,063)
Corporate and Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 0 | 0 |  |
Cost of revenues | 2,547 | 2,988 | 7,555 | 8,063
Gross profit | (2,547) | (2,988) |  |
Research and development | 2,497 | 2,818 | 7,831 | 8,045
Selling Expense | 1,552 | 1,443 | 5,722 | 4,510
Marketing Expense | 1,199 | 429 | 3,652 | 3,892
Net Contribution | $ (7,795) | $ (7,678) | $ (24,760) | $ (24,510)

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