Note H - Segment Information - Net Sales by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		105 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Sep. 25, 2031
Net sales	$ 32,699	$ 42,373	$ 118,121	$ 118,440	$ 32,699
UNITED STATES
Net sales	24,254	29,382	82,995	78,279
Non-US [Member]
Net sales	$ 8,445	$ 12,991	$ 35,126	$ 40,161