Note G - Business Segments - Revenues by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 28, 2018	Dec. 29, 2017
Net sales
Net sales	$ 78,107	$ 56,546	$ 152,796	$ 101,611
Net income (loss)	4,073	(4,113)	6,935	(722)
Intersegment Eliminations [Member]
Net sales
Net sales	(19,969)		(37,113)
Corporate, Non-Segment [Member]
Net sales
Net income (loss)	(4,420)	(4,623)	(9,658)	(6,968)
Manufacturing Segment [Member] | Operating Segments [Member]
Net sales
Net sales	70,986	48,580	139,899	88,453
Net income (loss)	7,924	123	15,159	5,190
Manufacturing Segment [Member] | Intersegment Eliminations [Member]
Net sales
Net sales	(14,931)	(9,489)	(29,681)	(19,821)
Distribution Segment [Member] | Operating Segments [Member]
Net sales
Net sales	27,090	21,336	50,010	38,998
Net income (loss)	569	387	1,434	1,056
Distribution Segment [Member] | Intersegment Eliminations [Member]
Net sales
Net sales	$ (5,038)	$ (3,881)	$ (7,432)	$ (6,019)