Commitments And Contingencies (Narrative) (Detail) - USD ($)	12 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Operating Leases Rent Expense Net	$ 7,800,000	$ 6,600,000	$ 3,800,000
Standard and Extended Product Warranty Accrual	32,000	$ 30,000
Loss Contingency, Damages Sought, Value	$ 9,000,000
Maximum
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Terms of lease agreements	8 years