Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Cost of Property and Equipment and Estimated Useful Lives (Details)

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Property and Equipment - Cost of Property and Equipment and Estimated Useful Lives (Details) - USD ($)
$ in Thousands
Dec. 30, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 212,226 $ 209,717
Less accumulated depreciation and amortization 128,939 124,748
Property and equipment, net, excluding non-depreciable 83,287 84,969
Property and equipment, net $ 99,814 97,773
Buildings    
Property, Plant and Equipment [Line Items]    
Useful life 39 years 6 months  
Property, plant and equipment, gross $ 77,803 78,071
Laboratory and production equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 54,502 50,679
Laboratory and production equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Laboratory and production equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life 7 years  
Air transportation equipment    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Property, plant and equipment, gross $ 2,952 2,952
Computer equipment and software    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 52,302 53,436
Computer equipment and software | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life 3 years  
Computer equipment and software | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 6,323 6,198
Furniture and fixtures | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life 3 years  
Furniture and fixtures | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Automobiles    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 744 722
Automobiles | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life 3 years  
Automobiles | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 14,337 14,388
Leasehold improvements | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life 3 years  
Leasehold improvements | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Land improvements    
Property, Plant and Equipment [Line Items]    
Useful life 15 years  
Property, plant and equipment, gross $ 3,263 3,271
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment, net 6,720 6,723
Deposits and projects in process    
Property, Plant and Equipment [Line Items]    
Property and equipment, net $ 9,807 $ 6,081