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Business Segment Information - Summary of Net Sales by Customer Class (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Revenue, Major Customer [Line Items]
Total net sales	$ 659,233	$ 593,784	$ 1,949,425	$ 1,578,707
Pharmaceutical [Member]
Revenue, Major Customer [Line Items]
Total net sales	398,338	343,001	1,175,191	926,582
Industrial [Member]
Revenue, Major Customer [Line Items]
Total net sales	196,032	179,128	581,884	474,592
Academic and government [Member]
Revenue, Major Customer [Line Items]
Total net sales	$ 64,863	$ 71,655	$ 192,350	$ 177,533

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