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Summary of significant accounting policies (Details) - USD ($)
12 Months Ended
Jul. 01, 2023
Jul. 02, 2022
Jul. 03, 2021
Property, Plant and Equipment [Line Items]      
Fair value assets transfers into and out of level 3, net $ 0 $ 0 $ 0
Minimum      
Property, Plant and Equipment [Line Items]      
Intangible asset, useful life 5 years    
Maximum      
Property, Plant and Equipment [Line Items]      
Intangible asset, useful life 10 years    
Lease term 15 years    
Level 1      
Property, Plant and Equipment [Line Items]      
Fair value of Cash equivalents recorded based upon level 1 $ 3,700,000 $ 5,400,000  
Building      
Property, Plant and Equipment [Line Items]      
Useful life 30 years    
Machinery Fixtures And Equipment      
Property, Plant and Equipment [Line Items]      
Useful life 10 years    
Machinery Fixtures And Equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 2 years    
Information Technology Hardware and Software      
Property, Plant and Equipment [Line Items]      
Useful life 10 years    
Information Technology Hardware and Software | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 2 years