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v3.23.1

Operating Segments and Enterprise-Wide Information - Revenue by Segment, Recognition Type, and Geographic Area (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 01, 2023 | Mar. 26, 2022
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 167,448 | $ 197,174
Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 127,328 | 159,983
Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 40,120 | 37,191
Taiwan |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 40,329 | 53,069
Taiwan | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 38,897 | 42,522
Taiwan | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,432 | 10,547
United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 37,731 | 25,647
United States | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 24,641 | 19,976
United States | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 13,090 | 5,671
China |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 27,099 | 38,399
China | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 18,476 | 32,791
China | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 8,623 | 5,608
South Korea |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 20,775 | 27,501
South Korea | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 19,572 | 24,881
South Korea | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,203 | 2,620
Malaysia |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 11,270 | 22,199
Malaysia | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 10,324 | 21,517
Malaysia | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 946 | 682
Japan |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 10,977 | 9,382
Japan | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 7,136 | 4,785
Japan | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 3,841 | 4,597
Europe |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 9,426 | 8,395
Europe | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 3,426 | 2,382
Europe | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 6,000 | 6,013
Singapore |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,340 | 10,896
Singapore | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 3,200 | 10,284
Singapore | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,140 | 612
Rest of the world |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,501 | 1,686
Rest of the world | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,656 | 845
Rest of the world | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,845 | 841
Products transferred at a point in time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 163,388 | 194,252
Products transferred at a point in time | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 126,678 | 158,836
Products transferred at a point in time | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 36,710 | 35,416
Products and services transferred over time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,060 | 2,922
Products and services transferred over time | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 650 | 1,147
Products and services transferred over time | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 3,410 | 1,775
Foundry & Logic |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 101,562 | 114,121
Foundry & Logic | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 101,562 | 114,121
Foundry & Logic | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
DRAM |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 19,890 | 34,437
DRAM | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 19,890 | 34,437
DRAM | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Flash |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,876 | 11,425
Flash | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,876 | 11,425
Flash | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 40,120 | 37,191
Systems | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Systems | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 40,120 | $ 37,191

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