Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Net sales	$ 29,195	$ 36,532
Income from operations	(55)	2,724
Operating Segments [Member]
Income from operations	1,826	4,947
Corporate, Non-Segment [Member]
Income from operations	(1,881)	(2,223)
Private Label Contract Manufacturing [Member]
Net sales	26,009	31,087
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	1,613	3,145
Patent and Trademark Licensing [Member]
Net sales	3,186	5,445
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 213	$ 1,802