Note E - Business Segments - Revenues by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 25, 2020	Dec. 31, 2021	Dec. 25, 2020
Net sales	$ 59,889	$ 48,557	$ 107,650	$ 94,737
Net income (loss)	(3,836)	(4,313)	(1,914)	(8,292)
Intersegment Eliminations [Member]
Net sales	(17,700)	(16,371)	(32,068)	(31,192)
Corporate, Non-Segment [Member]
Net income (loss)	(3,731)	(1,701)	(7,124)	(4,173)
Manufacturing Segment [Member] | Operating Segments [Member]
Net sales	49,298	41,705	90,893	80,200
Net income (loss)	(1,601)	(3,112)	3,231	(5,774)
Manufacturing Segment [Member] | Intersegment Eliminations [Member]
Net sales	(13,200)	(12,170)	(24,143)	(22,908)
Distribution Segment [Member] | Operating Segments [Member]
Net sales	28,291	23,223	48,825	45,729
Net income (loss)	1,496	500	1,979	1,655
Distribution Segment [Member] | Intersegment Eliminations [Member]
Net sales	$ (4,500)	$ (4,201)	$ (7,925)	$ (8,284)