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Note L - Restructuring of Operations (Details Textual) $ in Thousands	3 Months Ended			9 Months Ended		70 Months Ended
	Mar. 26, 2021 USD ($)	Mar. 27, 2020 USD ($)	Dec. 27, 2019 USD ($)	Mar. 26, 2021 USD ($)	Mar. 27, 2020 USD ($)	Mar. 26, 2021 USD ($)
Restructuring Charges, Total	$ 251	$ 532		$ 777	$ 4,902	$ 13,182
Restructuring and Related Cost, Number of Positions Eliminated						249
Payments for Restructuring				646
Employee Severance [Member]
Restructuring Charges, Total	$ 251	532		$ 777	$ 1,717
Contract Termination [Member] \| Manufacturing Segment [Member]
Restructuring Charges, Total		$ 3,185
Restructuring Reserve, Settled without Cash			$ 2,185
Payments for Restructuring			$ 1,000