Assets and Liabilities, Lessee (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jan. 01, 2022	Jan. 01, 2022	Dec. 26, 2020	Jul. 03, 2021
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets, net	$ 19,068,000	$ 19,068,000		$ 15,745,000
Total lease liabilities	$ 19,027,000	$ 19,027,000
Operating Lease, Weighted Average Remaining Lease Term	5 years 6 months	5 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	4.00%	4.00%
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	$ 6,656,000	$ 6,656,000
Finance Lease, Weighted Average Remaining Lease Term	2 years 7 months 20 days	2 years 7 months 20 days
Finance Lease, Weighted Average Discount Rate, Percent	8.70%	8.70%
Operating Lease, Payments	$ 478,000	$ 1,924,000
Finance Lease, Principal Payments	676,000	1,077,000	$ 0
Finance Lease, Liability	5,973,000	5,973,000
Other current liabilities
Lessee, Lease, Description [Line Items]
Total lease liabilities	5,400,000	5,400,000
Other Long Term Liabilities
Lessee, Lease, Description [Line Items]
Total lease liabilities	$ 13,700,000	$ 13,700,000