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Revenue (Tables) | 3 Months Ended
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Mar. 30, 2025
Revenue from Contract with Customer [Abstract] |
Disaggregated Revenue by Primary Geographical Market, Major Product Line and Timing of Revenue Recognition | The following table provides information about disaggregated revenue by timing of revenue recognition, primary geographical market, and major product lines.
|  | Semiconductor Test |  |  | Robotics |  |  | Product Test |  |  | Total Reportable Segments |  |  |  |  |  |  |
|  | System-on-a-chip |  |  | Memory |  |  | IST |  |  |  |  |  |  |  |  |  |  |  | Corporate and Eliminations |  |  | Total |
| (in thousands) |
For the Three Months Ended March 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Timing of Revenue Recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Point in Time |  | $ | 337,691 |  |  | $ | 101,662 |  |  | $ | 22,892 |  |  | $ | 67,146 |  |  | $ | 56,559 |  |  | $ | 585,950 |  |  | $ | — |  |  | $ | 585,950 |
Over Time |  |  | 68,700 |  |  |  | 7,745 |  |  |  | 3,814 |  |  |  | 1,841 |  |  |  | 17,630 |  |  | $ | 99,730 |  |  |  | — |  |  | $ | 99,730 |
Total |  | $ | 406,391 |  |  | $ | 109,407 |  |  | $ | 26,706 |  |  | $ | 68,987 |  |  | $ | 74,189 |  |  | $ | 685,680 |  |  | $ | — |  |  | $ | 685,680 |
Geographical Market |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asia Pacific |  | $ | 358,103 |  |  | $ | 107,681 |  |  | $ | 26,016 |  |  | $ | 15,062 |  |  | $ | 25,546 |  |  | $ | 532,408 |  |  | $ | — |  |  | $ | 532,408 |
Americas |  |  | 35,052 |  |  |  | 917 |  |  |  | 690 |  |  |  | 32,471 |  |  |  | 40,785 |  |  | $ | 109,915 |  |  |  | — |  |  | $ | 109,915 |
Europe, Middle East and Africa |  |  | 13,236 |  |  |  | 809 |  |  |  | — |  |  |  | 21,454 |  |  |  | 7,858 |  |  | $ | 43,357 |  |  |  | — |  |  | $ | 43,357 |
Total |  | $ | 406,391 |  |  | $ | 109,407 |  |  | $ | 26,706 |  |  | $ | 68,987 |  |  | $ | 74,189 |  |  | $ | 685,680 |  |  | $ | — |  |  | $ | 685,680 |
For the Three Months Ended March 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Timing of Revenue Recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Point in Time |  | $ | 229,592 |  |  | $ | 102,436 |  |  | $ | 16,634 |  |  | $ | 85,183 |  |  | $ | 62,353 |  |  | $ | 496,198 |  |  | $ | — |  |  | $ | 496,198 |
Over Time |  |  | 72,716 |  |  |  | 7,510 |  |  |  | 5,882 |  |  |  | 2,471 |  |  |  | 15,042 |  |  | $ | 103,621 |  |  |  | — |  |  | $ | 103,621 |
Total |  | $ | 302,308 |  |  | $ | 109,946 |  |  | $ | 22,516 |  |  | $ | 87,654 |  |  | $ | 77,395 |  |  | $ | 599,819 |  |  | $ | — |  |  | $ | 599,819 |
Geographical Market |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asia Pacific |  | $ | 270,567 |  |  | $ | 95,606 |  |  | $ | 19,866 |  |  | $ | 14,579 |  |  | $ | 23,056 |  |  | $ | 423,674 |  |  | $ | — |  |  | $ | 423,674 |
Americas |  |  | 22,551 |  |  |  | 9,052 |  |  |  | 2,650 |  |  |  | 34,630 |  |  |  | 39,768 |  |  | $ | 108,651 |  |  |  | — |  |  | $ | 108,651 |
Europe, Middle East and Africa |  |  | 9,190 |  |  |  | 5,288 |  |  |  | — |  |  |  | 38,445 |  |  |  | 14,571 |  |  | $ | 67,494 |  |  |  | — |  |  | $ | 67,494 |
Total |  | $ | 302,308 |  |  | $ | 109,946 |  |  | $ | 22,516 |  |  | $ | 87,654 |  |  | $ | 77,395 |  |  | $ | 599,819 |  |  | $ | — |  |  | $ | 599,819 |
Deferred Revenue and Customer Advances | Deferred revenue and customer advances consist of the following and are included in short and long-term deferred revenue and customer advances on the balance sheet:
|  | March 30, 2025 |  |  | December 31, 2024 |
|  | (in thousands) |
Maintenance, service and training |  | $ | 55,795 |  |  | $ | 58,473 |
Customer advances, undelivered elements and other |  |  | 59,217 |  |  |  | 48,118 |
Extended warranty |  |  | 44,312 |  |  |  | 41,624 |
Total deferred revenue and customer advances |  | $ | 159,324 |  |  | $ | 148,215 |

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