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Property Plant And Equipment (Schedule Of Property Plant And Equipment) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jul. 01, 2017
Property, Plant and Equipment [Line Items]      
Land $ 2,940 $ 2,940  
Buildings and improvements 23,776 23,441  
Equipment 67,348 60,367  
Furniture and fixtures 4,248 3,754  
Property, plant and equipment, gross 98,312 90,502  
Accumulated depreciation (68,899) (62,954)  
Property, plant and equipment, net $ 29,413 $ 27,548 $ 30,496
Buildings and improvements | Minimum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 3 years    
Buildings and improvements | Maximum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 30 years    
Equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 1 year    
Equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 10 years    
Furniture and fixtures | Minimum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 3 years    
Furniture and fixtures | Maximum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 5 years