Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Net sales	$ 39,726	$ 29,195
Income from operations	2,085	(55)
Operating Segments [Member]
Income from operations	4,094	1,826
Corporate, Non-Segment [Member]
Income from operations	(2,009)	(1,881)
Private Label Contract Manufacturing [Member]
Net sales	37,047	26,009
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	3,424	1,613
Patent and Trademark Licensing [Member]
Net sales	2,679	3,186
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 670	$ 213