Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - USD ($)		12 Months Ended
		Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2020	Jun. 30, 2019
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance at Beginning of Period		$ 5,665,000	$ 2,777,000	$ 2,777,000	$ 2,418,000
Charged to Costs and Expenses		964,000		4,143,000	1,383,000
Deductions- Describe	[1]	(2,597,000)		(1,255,000)	(1,024,000)
Balance at End of Period		4,032,000	5,665,000	5,665,000	2,777,000
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
Balance at Beginning of Period		9,681,000	9,872,000	$ 9,872,000	9,972,000
Charged to Costs and Expenses		174,000	37,000		0
Deductions- Describe	[1]	(597,000)	(228,000)		(100,000)
Balance at End of Period		$ 9,258,000	$ 9,681,000		$ 9,872,000

[1] Reduction in reserve due to amounts written off.