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Segments and Geographic Information | 12 Months Ended
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Dec. 27, 2025
Segment Reporting [Abstract] |
Segments and Geographic Information | Segments and Geographic Information We operate in two reportable segments consisting of the Probe Cards Segment and the Systems Segment. Our chief operating decision maker (“CODM”) is our President and Chief Executive Officer, who assesses the reportable segments' performance by using each reportable segment's net contribution to make decisions about allocating resources and assessing performance for the entire company. The CODM uses net contribution for each reportable segment predominantly in the annual budget and forecasting process, as well as consideration of budget-to-actual variances on a quarterly basis when making decisions for assessment of our performance and results of operations. Certain components of net contribution are utilized to determine executive compensation along with other measures. The following table provides net contribution by reportable segment and includes a reconciliation to income before income taxes (dollars in thousands):
| Fiscal 2025
| Probe Cards |  | Systems |  | Corporate and Other |  | Total
Revenues | $ | 637,898 |  |  | $ | 147,095 |  |  | $ | — |  |  | $ | 784,993 |
Cost of revenues | 379,398 |  |  | 85,542 |  |  | 11,202 |  |  | 476,142 |
Gross profit | 258,500 |  |  | 61,553 |  |  | (11,202) |  |  | 308,851 |
Gross margin | 40.5 | % |  | 41.8 | % |  |  |  | 39.3 | %
Research and development | 86,295 |  |  | 18,816 |  |  | 10,571 |  |  | 115,682 |
Selling | 29,085 |  |  | 14,938 |  |  | 7,276 |  |  | 51,299 |
Marketing | 6,494 |  |  | 7,472 |  |  | 4,943 |  |  | 18,909 |
Net contribution | $ | 136,626 |  |  | $ | 20,327 |  |  | $ | (33,992) |  |  | 122,961 |
General and administrative |  |  |  |  |  |  | 62,866 |
Factory start-up costs |  |  |  |  |  |  | 3,025 |
Operating income |  |  |  |  |  |  | 57,070 |
Interest income |  |  |  |  |  |  | 10,640 |
Interest expense |  |  |  |  |  |  | (521) |
Other income (expense), net |  |  |  |  |  |  | 2,202 |
Income before income taxes and equity investment |  |  |  |  |  |  | $ | 69,391 |
| Fiscal 2024
| Probe Cards |  | Systems |  | Corporate and Other |  | Total
Revenues | $ | 625,960 |  |  | $ | 137,639 |  |  | $ | — |  |  | $ | 763,599 |
Cost of revenues | 366,953 |  |  | 78,128 |  |  | 10,595 |  |  | 455,676 |
Gross profit | 259,007 |  |  | 59,511 |  |  | (10,595) |  |  | 307,923 |
Gross margin | 41.4 | % |  | 43.2 | % |  |  |  | 40.3 | %
Research and development | 90,463 |  |  | 20,617 |  |  | 10,858 |  |  | 121,938 |
Selling | 31,462 |  |  | 16,082 |  |  | 5,994 |  |  | 53,538 |
Marketing | 8,775 |  |  | 7,184 |  |  | 5,120 |  |  | 21,079 |
Net contribution | $ | 128,307 |  |  | $ | 15,628 |  |  | $ | (32,567) |  |  | 111,368 |
General and administrative |  |  |  |  |  |  | 67,169 |
Gain on sale of business |  |  |  |  |  |  | 20,581 |
Operating income |  |  |  |  |  |  | 64,780 |
Interest income |  |  |  |  |  |  | 14,111 |
Interest expense |  |  |  |  |  |  | (418) |
Other income (expense), net |  |  |  |  |  |  | 939 |
Income before income taxes and equity investment |  |  |  |  |  |  | $ | 79,412 |
| Fiscal 2023
| Probe Cards |  | Systems |  | Corporate and Other |  | Total
Revenues | $ | 497,903 |  |  | $ | 165,199 |  |  | $ | — |  |  | $ | 663,102 |
Cost of revenues | 312,511 |  |  | 80,464 |  |  | 11,547 |  |  | 404,522 |
Gross profit | 185,392 |  |  | 84,735 |  |  | (11,547) |  |  | 258,580 |
Gross margin | 37.2 | % |  | 51.3 | % |  |  |  | 39.0 | %
Research and development | 83,104 |  |  | 21,487 |  |  | 11,174 |  |  | 115,765 |
Selling | 26,912 |  |  | 17,026 |  |  | 8,581 |  |  | 52,519 |
Marketing | 5,983 |  |  | 9,367 |  |  | 7,273 |  |  | 22,623 |
Net Contribution | $ | 69,393 |  |  | $ | 36,855 |  |  | $ | (38,575) |  |  | 67,673 |
General and administrative |  |  |  |  |  |  | 57,870 |
Gain on sale of business |  |  |  |  |  |  | 72,953 |
Operating income |  |  |  |  |  |  | 82,756 |
Interest income |  |  |  |  |  |  | 7,217 |
Interest expense |  |  |  |  |  |  | (421) |
Other income (expense), net |  |  |  |  |  |  | (285) |
Income before income taxes and equity investment |  |  |  |  |  |  | $ | 89,267 |
Corporate and Other includes unallocated expenses relating to amortization of stock-based compensation expense, intangible assets, acquisition-related costs, including charges related to inventory and fixed assets stepped up to fair value, restructuring charges, and other costs, which are not used in evaluating the results of, or in allocating resources to, our reportable segments. Acquisition-related costs include transaction costs and any costs directly related to the acquisition and integration of acquired businesses. Net contribution represents Operating income excluding general and administrative expenses and gains on sale of business, which are not used in evaluating the results of, or in allocating resources to, our reportable segments. The following table summarizes revenue, by geographic region, as a percentage of total revenues based upon ship-to location:
| Fiscal Year Ended
| December 27, 2025 |  | December 28, 2024 |  | December 30, 2023
South Korea | 30.3 | % |  | 24.2 | % |  | 17.8 | %
Taiwan | 25.8 |  |  | 22.7 |  |  | 22.3 |
United States | 19.4 |  |  | 24.1 |  |  | 25.9 |
China | 7.4 |  |  | 13.5 |  |  | 13.8 |
Japan | 5.5 |  |  | 4.4 |  |  | 5.5 |
Singapore | 4.2 |  |  | 2.6 |  |  | 2.8 |
Europe | 3.7 |  |  | 4.6 |  |  | 5.9 |
Malaysia | 2.4 |  |  | 2.4 |  |  | 4.0 |
Rest of World | 1.3 |  |  | 1.5 |  |  | 2.0 |
Total revenues | 100.0 | % |  | 100.0 | % |  | 100.0 | %
The following table summarizes revenue by market (in thousands):
| Fiscal Year Ended
| December 27, 2025 |  | December 28, 2024 |  | December 30, 2023
Foundry & Logic | $ | 369,897 |  |  | $ | 381,182 |  |  | $ | 363,539 |
DRAM | 247,397 |  |  | 227,422 |  |  | 113,779 |
Flash | 20,604 |  |  | 17,356 |  |  | 20,585 |
Systems | 147,095 |  |  | 137,639 |  |  | 165,199 |
Total revenues | $ | 784,993 |  |  | $ | 763,599 |  |  | $ | 663,102 |
The following table summarizes revenue by timing of revenue recognition (in thousands):
| Fiscal Year Ended
| December 27, 2025 |  | December 28, 2024 |  | December 30, 2023
| Probe Cards |  | Systems |  | Total |  | Probe Cards |  | Systems |  | Total |  | Probe Cards |  | Systems |  | Total
Products transferred at a point in time | $ | 630,955 |  |  | $ | 131,859 |  |  | $ | 762,814 |  |  | $ | 620,597 |  |  | $ | 122,181 |  |  | $ | 742,778 |  |  | $ | 494,624 |  |  | $ | 155,145 |  |  | $ | 649,769 |
Services transferred over time | 6,943 |  |  | 15,236 |  |  | 22,179 |  |  | 5,363 |  |  | 15,458 |  |  | 20,821 |  |  | 3,279 |  |  | 10,054 |  |  | 13,333 |
Total | $ | 637,898 |  |  | $ | 147,095 |  |  | $ | 784,993 |  |  | $ | 625,960 |  |  | $ | 137,639 |  |  | $ | 763,599 |  |  | $ | 497,903 |  |  | $ | 165,199 |  |  | $ | 663,102 |
Long-lived assets, comprised of Operating lease, Right-of-use assets, Property, plant and equipment, net, Goodwill and Intangibles, net, reported based on the location of the asset was as follows (in thousands):
| December 27, 2025 |  | December 28, 2024 |  | December 30, 2023
United States | $ | 449,966 |  |  | $ | 411,646 |  |  | $ | 414,607 |
Europe | 48,733 |  |  | 21,323 |  |  | 23,204 |
Asia-Pacific | 9,902 |  |  | 9,366 |  |  | 11,135 |
Total | $ | 508,601 |  |  | $ | 442,335 |  |  | $ | 448,946 |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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