Note E - Business Segments - Revenues by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 24, 2021	Sep. 25, 2020
Net sales	$ 47,761	$ 46,179
Net income (loss)	1,920	(3,979)
Intersegment Eliminations [Member]
Net sales	(14,367)	(14,822)
Corporate, Non-Segment [Member]
Net income (loss)	(3,395)	(2,472)
Manufacturing Segment [Member] | Operating Segments [Member]
Net sales	41,594	38,495
Net income (loss)	4,832	(2,662)
Manufacturing Segment [Member] | Intersegment Eliminations [Member]
Net sales	(10,942)	(10,738)
Distribution Segment [Member] | Operating Segments [Member]
Net sales	20,534	22,506
Net income (loss)	483	1,155
Distribution Segment [Member] | Intersegment Eliminations [Member]
Net sales	$ (3,425)	$ (4,084)