Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Net sales	$ 46,320	$ 25,482	$ 134,129	$ 83,780
Income from operations	2,700	(4,223)	10,177	(3,580)
Operating Segments [Member]
Income from operations	4,782	(2,310)	16,251	2,057
Corporate, Non-Segment [Member]
Income from operations	(2,082)	(1,913)	(6,074)	(5,637)
Private Label Contract Manufacturing [Member]
Net sales	42,196	22,650	124,569	73,490
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	3,241	(3,123)	13,511	187
Patent and Trademark Licensing [Member]
Net sales	4,124	2,832	9,560	10,290
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 1,541	$ 813	$ 2,740	$ 1,870