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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, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]                      
Total net sales $ 858,510 $ 708,555 $ 714,319 $ 690,572 $ 836,449 $ 659,233 $ 681,647 $ 608,545 $ 2,971,956 $ 2,785,874 $ 2,365,365
Chemistry Consumables [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 525,399 507,209 432,080
Service [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 983,787 963,804 868,032
Net Sales Recognized at a Point in Time: [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 2,355,670 2,176,736 1,863,109
Net Sales Recognized at a Point in Time: [Member] | Instrument Systems [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 1,462,770 1,314,861 1,065,253
Net Sales Recognized at a Point in Time: [Member] | Chemistry Consumables [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 525,399 507,209 432,080
Net Sales Recognized at a Point in Time: [Member] | Service [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 367,501 354,666 365,776
Net Sales Recognized Over Time: [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 2,971,956 2,785,874 2,365,365
Net Sales Recognized Over Time: [Member] | Service [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 616,286 $ 609,138 $ 502,256