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v3.25.1

Operating Segments and Enterprise-Wide Information - Revenue by Segment, Recognition Type, and Geographic Area (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 29, 2025 | Mar. 30, 2024
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 171,356 | $ 168,725
Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 136,520 | 136,701
Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 34,836 | 32,024
Taiwan |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 45,362 | 29,877
Taiwan | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 40,747 | 27,179
Taiwan | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,615 | 2,698
United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 40,325 | 45,766
United States | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 27,784 | 35,596
United States | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 12,541 | 10,170
China |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 13,615 | 15,613
China | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 8,152 | 8,686
China | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,463 | 6,927
South Korea |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 43,171 | 50,717
South Korea | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 42,209 | 50,672
South Korea | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 962 | 45
Malaysia |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,600 | 1,863
Malaysia | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,552 | 1,608
Malaysia | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 48 | 255
Japan |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 10,319 | 8,542
Japan | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,179 | 4,347
Japan | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,140 | 4,195
Europe |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 7,781 | 8,849
Europe | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 3,535 | 3,528
Europe | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,246 | 5,321
Singapore |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 6,249 | 4,758
Singapore | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,871 | 3,516
Singapore | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,378 | 1,242
Rest of World |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,934 | 2,740
Rest of World | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,491 | 1,569
Rest of World | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 443 | 1,171
Products transferred at a point in time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 166,056 | 164,425
Products transferred at a point in time | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 134,721 | 135,641
Products transferred at a point in time | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 31,335 | 28,784
Products and services transferred over time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,300 | 4,300
Products and services transferred over time | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,799 | 1,060
Products and services transferred over time | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 3,501 | 3,240
Foundry & Logic |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 85,272 | 86,768
Foundry & Logic | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 85,272 | 86,768
Foundry & Logic | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
DRAM |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 48,858 | 45,896
DRAM | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 48,858 | 45,896
DRAM | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Flash |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,390 | 4,037
Flash | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,390 | 4,037
Flash | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 34,836 | 32,024
Systems | Probe Cards |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
Systems | Systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 34,836 | $ 32,024

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