Leases (Detail) - USD ($)	12 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Sep. 28, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 4,943,000	$ 5,335,000
Lease, Cost	6,088,000	5,777,000
Short-term Lease, Cost	1,145,000	442,000
Operating lease liabilities	11,428,000	12,624,000
Operating Lease, Right-of-Use Asset	15,745,000	17,568,000	$ 21,400,000
Total lease liabilities	15,653,000	17,173,000	$ 20,400,000
Cost of Sales
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	4,818,000	4,511,000
Selling, General and Administrative Expenses
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 1,270,000	$ 1,266,000
Maximum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	10 years
Minimum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year