Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2023
Net Sales	$ 25,136	$ 32,699	$ 84,307	$ 84,307	$ 118,121	$ 118,121
Income from operations	(1,952)	(2,488)	(6,009)	$ (6,009)	1,539	$ 1,539
Operating Segments [Member]
Income from operations	194	(453)	225		7,749
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Income from operations	(2,146)	(2,035)	(6,234)		(6,210)
Private Label Contract Manufacturing [Member]
Net Sales	22,479	30,354	77,718		112,969
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	(1,007)	(1,243)	(2,367)		6,264
Patent and Trademark Licensing [Member]
Net Sales	2,657	2,345	6,589		5,152
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 1,201	$ 790	$ 2,592		$ 1,485