Schedule II (Consolidated Valuation And Qualifying Accounts) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jul. 01, 2017
Provision for obsolete inventory
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 1,458	$ 1,306	$ 1,113
Provisions	91	31	496
Dispositions	243	121	(303)
Balance at end of year	1,792	1,458	1,306
Allowance for Doubtful Accounts
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	0	84	135
Provisions	58	(84)	(10)
Dispositions	0	0	(41)
Balance at end of year	$ 58	$ 0	$ 84