Income Taxes (Effective Tax Rate Reconciliation) (Detail) - USD ($)	12 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jun. 27, 2020
Income Tax Disclosure [Abstract]
Federal income tax provision at statutory rates	$ 775,000	$ 1,242,000	$ 907,000
State income taxes, net of federal tax effect	86,000	76,000	90,000
Foreign tax rate differences	336,000	(36,000)	336,000
Tax rate change	0	184,000	0
Federal rate differences applied to net operating loss carryback	(593,000)	0	0
Effect of income tax credits	(920,000)	(413,000)	(310,000)
Previously unrecognized tax benefits	146,000	(296,000)	(1,345,000)
Effect of repatriation of foreign earnings, net	0	(61,000)	0
Tax penalties & interest	179,000	0	0
Global Intangible Low-Taxed Income (GILTI) tax	59,000	34,000	0
Provision to return reconciliation	(32,000)	50,000	(241,000)
Equity compensation shortfall	104,000	572,000	0
Other	174,000	220,000	124,000
Total income tax provision (benefit)	$ 314,000	$ 1,572,000	$ (439,000)