Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Net sales	$ 48,083	$ 29,103	$ 87,809	$ 58,298
Income from operations	5,392	698	7,477	643
Operating Segments [Member]
Income from operations	7,372	2,539	11,469	4,366
Corporate, Non-Segment [Member]
Income from operations	(1,980)	(1,841)	(3,992)	(3,723)
Private Label Contract Manufacturing [Member]
Net sales	45,326	24,831	82,373	50,841
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	6,843	1,697	10,270	3,312
Patent and Trademark Licensing [Member]
Net sales	2,757	4,272	5,436	7,457
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 529	$ 842	$ 1,199	$ 1,054