Property Plant And Equipment (Schedule Of Property Plant And Equipment) (Detail) - USD ($)	12 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jun. 27, 2020
Property, Plant and Equipment [Line Items]
Land	$ 4,034,000	$ 4,034,000
Buildings and improvements	25,841,000	25,513,000
Equipment	71,180,000	77,509,000
Furniture and fixtures	5,286,000	5,271,000
Total Property, Plant and Equipment	106,341,000	112,327,000
Accumulated depreciation	(80,329,000)	(76,592,000)
Property, plant and equipment, net	26,012,000	35,735,000
Depreciation	$ 4,940	$ 6,631	$ 5,369
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