Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Net sales	$ 25,482	$ 35,455	$ 83,780	$ 108,030
Income from operations	(4,223)	1,835	(3,580)	6,766
Operating Segments [Member]
Income from operations	(2,310)	4,004	2,057	13,279
Corporate, Non-Segment [Member]
Income from operations	(1,913)	(2,169)	(5,637)	(6,513)
Private Label Contract Manufacturing [Member]
Net sales	22,650	31,758	73,490	94,505
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	(3,123)	3,534	187	9,534
Patent and Trademark Licensing [Member]
Net sales	2,832	3,697	10,290	13,525
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 813	$ 470	$ 1,870	$ 3,745