Note G - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Net sales	$ 28,074	$ 34,067
Income from operations	1,883	3,536
Operating Segments [Member]
Income from operations	3,445	5,214
Corporate, Non-Segment [Member]
Income from operations	(1,562)	(1,678)
Private Label Contract Manufacturing [Member]
Net sales	22,222	27,379
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	2,257	3,314
Patent and Trademark Licensing [Member]
Net sales	5,852	6,688
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 1,188	$ 1,900