Note H - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 29,103	$ 36,043	$ 58,298	$ 72,575
Income from operations	698	2,207	643	4,931
Operating Segments [Member]
Income from operations	2,539	4,328	4,366	9,275
Corporate, Non-Segment [Member]
Income from operations	(1,841)	(2,121)	(3,723)	(4,344)
Private Label Contract Manufacturing [Member]
Net sales	24,831	31,660	50,841	62,747
Private Label Contract Manufacturing [Member] | Operating Segments [Member]
Income from operations	1,697	2,853	3,312	5,999
Patent and Trademark Licensing [Member]
Net sales	4,272	4,383	7,457	9,828
Patent and Trademark Licensing [Member] | Operating Segments [Member]
Income from operations	$ 842	$ 1,475	$ 1,054	$ 3,276