Income Taxes (Effective Tax Rate Reconciliation) (Detail) - USD ($)	12 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jun. 29, 2019
Income Tax Disclosure [Abstract]
Federal income tax provision (benefit) at statutory rates	$ 1,242,000	$ 907,000	$ (1,836,000)
State income taxes, net of federal tax effect	76,000	90,000	(158,000)
Foreign tax rate differences	(36,000)	336,000	251,000
Tax rate change	184,000	0	0
Provisional transition tax on accumulated foreign earnings	0	0	(384,000)
Effect of income tax credits	(413,000)	(310,000)	(861,000)
Previously unrecognized tax benefits	(296,000)	1,345,000	0
Effect of repatriation of foreign earnings, net	61,000	0	(42,000)
Goodwill write-off	0	0	1,726,000
Global Intangible Low-Taxed Income (GILTI) tax	34,000	0	150,000
Provision to return reconciliation	50,000	(241,000)	630,000
Equity compensation shortfall	572,000	0	0
Other	220,000	124,000	(234,000)
Total income tax provision (benefit)	$ 1,572,000	$ (439,000)	$ (758,000)