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Organization and Significant Accounting Policies - Narrative - Warranties (Details)
 3 Months Ended
Mar. 29, 2020
Instruments  
Product Warranty Liability [Line Items]  
Warranty period 1 year
Minimum | Consumables  
Product Warranty Liability [Line Items]  
Warranty period 6 months
Maximum | Consumables  
Product Warranty Liability [Line Items]  
Warranty period 12 months