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Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 02, 2023
Jul. 03, 2022
Jul. 02, 2023
Jul. 03, 2022
Segment Reporting Information [Line Items]        
Restructuring and other—employee severance $ 6,358 $ 2,044 $ 8,395 $ 17,758
Semiconductor Test        
Segment Reporting Information [Line Items]        
Cost of revenues—inventory charge 4,184 2,071 7,952 2,315
Restructuring and other—employee severance 2,485 0 3,279  
System Test        
Segment Reporting Information [Line Items]        
Cost of revenues—inventory charge 0 0 1,113 0
Restructuring and other—employee severance 0 0 642 0
Robotics        
Segment Reporting Information [Line Items]        
Cost of revenues—inventory charge 769 831 1,551 1,197
Restructuring and other—employee severance 1,638 0 2,071 0
Wireless Test        
Segment Reporting Information [Line Items]        
Cost of revenues—inventory charge 0 2,099 725 2,976
Corporate And Eliminations        
Segment Reporting Information [Line Items]        
Restructuring and other—employee severance 0 0 1,124 0
Selling and administrative—equity modification charge 0 0 5,889 0
Restructuring and other—legal settlement charge 0 0 0 14,700
Restructuring and other—other $ 1,100 $ 1,500 $ 1,100 $ 2,000