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Business Segment Information - Summary of Net Sales of Company Recognized at a Point in Time Versus Over Time (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total net sales	$ 872,714	$ 740,305	$ 708,529	$ 636,839	$ 819,474	$ 711,692	$ 740,576	$ 684,674	$ 2,958,387	$ 2,956,416	$ 2,971,956
Chemistry Consumables [Member]
Disaggregation of Revenue [Line Items]
Total net sales									565,481	541,469	525,399
Service [Member]
Disaggregation of Revenue [Line Items]
Total net sales									1,114,211	1,053,366	983,787
Net Sales Recognized at a Point in Time: [Member]
Disaggregation of Revenue [Line Items]
Total net sales									2,213,325	2,275,580	2,355,670
Net Sales Recognized at a Point in Time: [Member] | Instrument Systems [Member]
Disaggregation of Revenue [Line Items]
Total net sales									1,278,695	1,361,581	1,462,770
Net Sales Recognized at a Point in Time: [Member] | Chemistry Consumables [Member]
Disaggregation of Revenue [Line Items]
Total net sales									565,481	541,469	525,399
Net Sales Recognized at a Point in Time: [Member] | Service [Member]
Disaggregation of Revenue [Line Items]
Total net sales									369,149	372,530	367,501
Net Sales Recognized Over Time: [Member]
Disaggregation of Revenue [Line Items]
Total net sales									2,958,387	2,956,416	2,971,956
Net Sales Recognized Over Time: [Member] | Service [Member]
Disaggregation of Revenue [Line Items]
Total net sales									$ 745,062	$ 680,836	$ 616,286

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