Note E - Business Segments - Revenues by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 25, 2020	Dec. 27, 2019	Dec. 25, 2020	Dec. 27, 2019
Net sales	$ 48,438	$ 59,536	$ 94,581	$ 118,826
Net income (loss)	(4,313)	(6,516)	(8,292)	(12,827)
Intersegment Eliminations [Member]
Net sales	(16,490)	(19,662)	(31,348)	(37,360)
Corporate, Non-Segment [Member]
Net income (loss)	(1,701)	(4,422)	(4,173)	(6,970)
Manufacturing Segment [Member] | Operating Segments [Member]
Net sales	41,705	57,173	80,200	111,734
Net income (loss)	(3,112)	(2,936)	(5,774)	(7,791)
Manufacturing Segment [Member] | Intersegment Eliminations [Member]
Net sales	(12,170)	(15,105)	(22,908)	(28,935)
Distribution Segment [Member] | Operating Segments [Member]
Net sales	23,223	22,025	45,729	44,452
Net income (loss)	500	842	1,655	1,934
Distribution Segment [Member] | Intersegment Eliminations [Member]
Net sales	$ (4,320)	$ (4,557)	$ (8,440)	$ (8,425)