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Business Segment Information - Summary of Net Sales by Customer Class (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Revenue, Major Customer [Line Items]    
Total net sales $ 608,545 $ 464,939
Pharmaceutical [Member]    
Revenue, Major Customer [Line Items]    
Total net sales 360,148 272,563
Industrial [Member]    
Revenue, Major Customer [Line Items]    
Total net sales 183,273 143,354
Academic and government [Member]    
Revenue, Major Customer [Line Items]    
Total net sales $ 65,124 $ 49,022