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v3.22.1

Operating Segments and Enterprise-Wide Information - Revenue by Segment, Recognition Type, and Geographic Area (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 26, 2022 | Mar. 27, 2021
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 197,174 | $ 186,636
Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 159,983 | 158,898
Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 37,191 | 27,738
Taiwan |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 53,069 | 45,580
Taiwan | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 42,522 | 44,734
Taiwan | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 10,547 | 846
China |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 38,399 | 42,625
China | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 32,791 | 37,831
China | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,608 | 4,794
South Korea |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 27,501 | 19,085
South Korea | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 24,881 | 18,001
South Korea | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,620 | 1,084
Malaysia |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 22,199 | 19,930
Malaysia | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 21,517 | 19,888
Malaysia | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 682 | 42
United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 25,647 | 29,486
United States | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 19,976 | 21,308
United States | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,671 | 8,178
Singapore |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 10,896 | 8,558
Singapore | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 10,284 | 7,627
Singapore | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 612 | 931
Japan |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 9,382 | 9,321
Japan | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,785 | 5,249
Japan | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,597 | 4,072
Europe |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 8,395 | 9,999
Europe | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,382 | 2,833
Europe | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 6,013 | 7,166
Rest of the world |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,686 | 2,052
Rest of the world | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 845 | 1,427
Rest of the world | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 841 | 625
Products transferred at a point in time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 194,252 | 183,147
Products transferred at a point in time | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 158,836 | 158,476
Products transferred at a point in time | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 35,416 | 24,671
Products and services transferred over time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,922 | 3,489
Products and services transferred over time | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,147 | 422
Products and services transferred over time | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,775 | 3,067
Foundry & Logic |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 114,121 | 113,410
Foundry & Logic | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 114,121 | 113,410
Foundry & Logic | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
DRAM |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 34,437 | 33,898
DRAM | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 34,437 | 33,898
DRAM | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Flash |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 11,425 | 11,590
Flash | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 11,425 | 11,590
Flash | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 37,191 | 27,738
Systems | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Systems | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 37,191 | $ 27,738

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