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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, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]                      
Total net sales $ 819,474 $ 711,692 $ 740,576 $ 684,674 $ 858,510 $ 708,555 $ 714,319 $ 690,572 $ 2,956,416 $ 2,971,956 $ 2,785,874
Chemistry Consumables [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 541,469 525,399 507,209
Service [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 1,053,366 983,787 963,804
Net Sales Recognized at a Point in Time: [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 2,275,580 2,355,670 2,176,736
Net Sales Recognized at a Point in Time: [Member] | Instrument Systems [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 1,361,581 1,462,770 1,314,861
Net Sales Recognized at a Point in Time: [Member] | Chemistry Consumables [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 541,469 525,399 507,209
Net Sales Recognized at a Point in Time: [Member] | Service [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 372,530 367,501 354,666
Net Sales Recognized Over Time: [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 2,956,416 2,971,956 2,785,874
Net Sales Recognized Over Time: [Member] | Service [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 680,836 $ 616,286 $ 609,138