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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
Apr. 01, 2023
Apr. 02, 2022
Disaggregation of Revenue [Line Items]    
Total net sales $ 684,674 $ 690,572
Chemistry Consumables [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 133,515 125,618
Service [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 248,217 239,732
Net Sales Recognized at a Point in Time: [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 524,664 536,618
Net Sales Recognized at a Point in Time: [Member] | Instrument Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 302,942 325,222
Net Sales Recognized at a Point in Time: [Member] | Chemistry Consumables [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 133,515 125,618
Net Sales Recognized at a Point in Time: [Member] | Service [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 88,207 85,778
Net Sales Recognized Over Time: [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 684,674 690,572
Net Sales Recognized Over Time: [Member] | Service [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales $ 160,010 $ 153,954