Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Net sales	$ 42,373	$ 46,320	$ 118,440	$ 134,129
Income from operations	3,274	2,700	9,903	10,177
Operating Segments [Member]
Income from operations	5,418	4,782	16,271	16,251
Corporate, Non-Segment [Member]
Income from operations	(2,144)	(2,082)	(6,368)	(6,074)
Private Label Contract Manufacturing [Member]
Net sales	37,623	42,196	104,894	124,569
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	3,605	3,241	10,065	13,511
Patent and Trademark Licensing [Member]
Net sales	4,750	4,124	13,546	9,560
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 1,813	$ 1,541	$ 6,206	$ 2,740