Annual report [Section 13 and 15(d), not S-K Item 405]

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. 28, 2024
Dec. 30, 2023
Property, Plant and Equipment [Line Items]    
Less accumulated depreciation and amortization $ 130,088 $ 128,939
Property and equipment, net 94,565 99,814
Depreciable Property, Plant and Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 213,670 212,226
Property and equipment, net $ 83,582 83,287
Buildings    
Property, Plant and Equipment [Line Items]    
Useful life 39 years 6 months  
Property, plant and equipment, gross $ 76,677 77,803
Laboratory and production equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 53,981 54,502
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 $ 57,312 52,302
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 $ 6,282 6,323
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 $ 637 744
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 $ 12,611 14,337
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 $ 3,218 3,263
Land    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 6,363 6,720
Deposits and projects in process    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 4,620 $ 9,807