Schedule of Segment Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Apr. 01, 2018 |
Apr. 02, 2017 |
Dec. 31, 2017 |
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Segment Reporting Information [Line Items] | ||||||||||||
Revenues | $ 487,467 | $ 456,913 | ||||||||||
Income (loss) before income taxes | [1],[2] | 95,820 | 92,016 | |||||||||
Total assets | 2,995,193 | [3] | 2,842,280 | [3] | $ 3,109,545 | |||||||
Semiconductor Test | ||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||
Revenues | 373,328 | 355,528 | ||||||||||
Income (loss) before income taxes | [1],[2] | 88,079 | 97,966 | |||||||||
Total assets | [3] | 758,737 | 740,334 | |||||||||
System Test | ||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||
Revenues | 43,019 | 39,845 | ||||||||||
Income (loss) before income taxes | [1],[2] | 5,888 | (2,759) | |||||||||
Total assets | [3] | 90,785 | 106,754 | |||||||||
Industrial Automation | ||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||
Revenues | 48,834 | 36,272 | ||||||||||
Income (loss) before income taxes | [1],[2] | 784 | (2,571) | |||||||||
Total assets | [3] | 406,557 | 331,016 | |||||||||
Wireless Test | ||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||
Revenues | 22,507 | 25,268 | ||||||||||
Income (loss) before income taxes | [1],[2] | 464 | 1,532 | |||||||||
Total assets | [3] | 59,739 | 61,356 | |||||||||
Corporate and Other | ||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||
Revenues | (221) | |||||||||||
Income (loss) before income taxes | [1],[2] | 605 | (2,152) | |||||||||
Total assets | [3] | $ 1,679,375 | $ 1,602,820 | |||||||||
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