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Business Segment Information - Summary of Net Sales by Customer Class (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 03, 2021
Jun. 27, 2020
Jul. 03, 2021
Jun. 27, 2020
Revenue, Major Customer [Line Items]        
Total net sales $ 681,647 $ 519,984 $ 1,290,192 $ 984,923
Pharmaceutical [Member]        
Revenue, Major Customer [Line Items]        
Total net sales 416,705 311,018 776,853 583,581
Industrial [Member]        
Revenue, Major Customer [Line Items]        
Total net sales 202,579 152,110 385,852 295,464
Academic and government [Member]        
Revenue, Major Customer [Line Items]        
Total net sales $ 62,363 $ 56,856 $ 127,487 $ 105,878