Note G - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Net sales	$ 33,335	$ 30,559	$ 61,409	$ 64,626
Income from operations	2,281	3,113	4,164	6,649
Operating Segments [Member]
Income from operations	3,889	4,488	7,333	9,702
Corporate, Non-Segment [Member]
Income from operations	(1,608)	(1,375)	(3,169)	(3,053)
Private Label Contract Manufacturing [Member]
Net sales	29,355	23,864	51,577	51,243
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	3,385	2,148	5,641	5,462
Patent and Trademark Licensing [Member]
Net sales	3,980	6,695	9,832	13,383
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 504	$ 2,340	$ 1,692	$ 4,240