Note E - Business Segments - Revenues by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 27, 2019	Dec. 28, 2018	Dec. 27, 2019	Dec. 28, 2018
Net sales	$ 59,536	$ 78,107	$ 118,826	$ 152,796
Net income (loss)	(6,516)	4,073	(12,827)	6,935
Intersegment Eliminations [Member]
Net sales	(19,662)	(19,969)	(37,360)	(37,113)
Corporate, Non-Segment [Member]
Net income (loss)	(4,422)	(4,420)	(6,970)	(9,658)
Manufacturing Segment [Member] | Operating Segments [Member]
Net sales	57,173	70,986	111,734	139,899
Net income (loss)	(2,936)	7,924	(7,791)	15,159
Manufacturing Segment [Member] | Intersegment Eliminations [Member]
Net sales	(15,105)	(14,931)	(28,935)	(29,681)
Distribution Segment [Member] | Operating Segments [Member]
Net sales	22,025	27,090	44,452	50,010
Net income (loss)	842	569	1,934	1,434
Distribution Segment [Member] | Intersegment Eliminations [Member]
Net sales	$ (4,557)	$ (5,038)	$ (8,425)	$ (7,432)