Note N - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Net sales	$ 178,520	$ 118,876
Income from operations	13,672	(1,509)
Operating Segments [Member]
Income from operations	22,186	6,538
Corporate, Non-Segment [Member]
Income from operations	(8,514)	(8,047)
Private Label Contract Manufacturing [Member]
Net sales	164,310	106,291
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	17,744	4,030
Patent and Trademark Licensing [Member]
Net sales	14,210	12,585
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 4,442	$ 2,508