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Schedule of Segment Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 02, 2023
Apr. 03, 2022
Dec. 31, 2022
Segment Reporting Information [Line Items]      
Revenues [1] $ 617,529 $ 755,370  
Income (loss) before income taxes [2],[3] 97,084 180,359  
Total assets 3,383,407 [4] 3,609,154 [4] $ 3,501,252
Semiconductor Test      
Segment Reporting Information [Line Items]      
Revenues 415,009 482,341  
Income (loss) before income taxes [2],[3] 96,185 149,705  
Total assets [4] 1,386,851 1,296,070  
System Test      
Segment Reporting Information [Line Items]      
Revenues [1] 74,631 118,668  
Income (loss) before income taxes [2],[3] 15,275 41,322  
Total assets [4] 173,669 187,283  
Robotics      
Segment Reporting Information [Line Items]      
Revenues 89,214 103,189  
Income (loss) before income taxes [2],[3] (18,490) (5,098)  
Total assets [4] 676,092 675,560  
Wireless Test      
Segment Reporting Information [Line Items]      
Revenues [1] 38,675 51,518  
Income (loss) before income taxes [2],[3] 9,352 18,619  
Total assets [4] 87,875 113,821  
Corporate and Eliminations [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 (346)  
Income (loss) before income taxes [2],[3] (5,238) (24,189)  
Total assets [4] $ 1,058,920 $ 1,336,420  
[1] Includes $1.3 million and $2.3 million in 2023 and 2022, respectively, for leases of Teradyne’s systems recognized outside Accounting Standards Codification (“ASC”) 606 “Revenue from Contracts with Customers.”
[2] Included in Corporate and Eliminations are: interest income, interest expense, net foreign exchange gains (losses), intercompany eliminations, legal and environmental fees, severance charges, acquisition related charges and compensation and an expense for the modification of Teradyne’s former chief executive officer’s outstanding equity awards.
[3] Included in income (loss) before taxes are charges related to restructuring and other, and inventory charges.
[4] Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities, and certain other assets.