Note N - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Net sales	$ 170,966	$ 178,520
Income from operations	13,679	13,672
Operating Segments [Member]
Income from operations	22,447	22,186
Corporate, Non-Segment [Member]
Income from operations	(8,768)	(8,514)
Private Label Contract Manufacturing [Member]
Net sales	154,798	164,310
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	15,667	17,744
Patent and Trademark Licensing [Member]
Net sales	16,168	14,210
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 6,780	$ 4,442