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Restructuring and Other - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jul. 01, 2018
Jun. 30, 2019
Jul. 01, 2018
Restructuring Cost and Reserve        
Contingent consideration adjustment $ 11,700 $ 3,500 $ (8,701) $ (8,468)
Acquisition related costs 500 2,500 1,800 3,300
Semiconductor Test        
Restructuring Cost and Reserve        
Severance benefit and charges $ 800 $ 2,400 $ 1,600  
Semiconductor Test, Industrial Automation and Corporate        
Restructuring Cost and Reserve        
Severance benefit and charges       $ 6,300