Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Net sales	$ 42,295	$ 37,727	$ 85,422	$ 76,067
Income from operations	2,485	2,401	4,027	6,629
Operating Segments [Member]
Income from operations	4,613	4,518	8,204	10,854
Corporate, Non-Segment [Member]
Income from operations	(2,128)	(2,117)	(4,177)	(4,225)
Private Label Contract Manufacturing [Member]
Net sales	40,839	33,677	82,615	67,271
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	4,266	2,761	7,510	6,461
Patent and Trademark Licensing [Member]
Net sales	1,456	4,050	2,807	8,796
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 347	$ 1,757	$ 694	$ 4,393