Note G - Business Segments - Revenues by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 29, 2019	Mar. 30, 2018	Mar. 29, 2019	Mar. 30, 2018
Net sales
Net sales	$ 77,420	$ 65,349	$ 230,216	$ 166,960
Net income (loss)	4,560	4,308	11,494	3,586
Intersegment Eliminations [Member]
Net sales
Net sales	(21,501)		(58,614)
Corporate, Non-Segment [Member]
Net sales
Net income (loss)	(1,292)	(3,751)	(10,950)	(10,719)
Manufacturing Segment [Member] | Operating Segments [Member]
Net sales
Net sales	71,374	58,482	211,273	146,935
Net income (loss)	6,350	6,910	21,509	12,100
Manufacturing Segment [Member] | Intersegment Eliminations [Member]
Net sales
Net sales	(16,272)	(13,494)	(45,953)	(33,315)
Distribution Segment [Member] | Operating Segments [Member]
Net sales
Net sales	27,547	22,854	77,557	61,852
Net income (loss)	(498)	1,149	935	2,205
Distribution Segment [Member] | Intersegment Eliminations [Member]
Net sales
Net sales	$ (5,229)	$ (2,493)	$ (12,661)	$ (8,512)