Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Dec. 31, 2017	Jun. 30, 2019
Income Tax [Line Items]
U.S. statutory rate	21.00%	21.00%	35.00%
Federal operating loss and credit carry-forwards	$ 1,400,000
State operating loss and credit carry-forwards	194,000
Valuation allowance	153,000
Foreign income before income taxes	5,100,000	$ 7,700,000
Total liability for unrecognized tax benefits including interest	1,600,000	1,600,000
Unrecognized tax benefits	1,458,000	1,462,000		$ 1,138,000
Unrecognized tax benefits, accrued interest	146,000	147,000
Unrecognized tax benefits, would effect tax rate	$ 1,100,000	$ 1,100,000
Earliest Tax Year | Federal
Income Tax [Line Items]
Expiration year of operating loss and credit carry-forwards	2030
Earliest Tax Year | State
Income Tax [Line Items]
Expiration year of operating loss and credit carry-forwards	2025
Latest Tax Year | Federal
Income Tax [Line Items]
Expiration year of operating loss and credit carry-forwards	2031
Latest Tax Year | State
Income Tax [Line Items]
Expiration year of operating loss and credit carry-forwards	2035