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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
Mar. 30, 2024
Apr. 01, 2023
Disaggregation of Revenue [Line Items]    
Total net sales $ 636,839 $ 684,674
Chemistry Consumables [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 134,207 133,515
Service [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 260,688 248,217
Net Sales Recognized at a Point in Time: [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 459,476 524,664
Net Sales Recognized at a Point in Time: [Member] | Instrument Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 241,944 302,942
Net Sales Recognized at a Point in Time: [Member] | Chemistry Consumables [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 134,207 133,515
Net Sales Recognized at a Point in Time: [Member] | Service [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 83,325 88,207
Net Sales Recognized Over Time: [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 636,839 684,674
Net Sales Recognized Over Time: [Member] | Service [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales $ 177,363 $ 160,010