Note H - Segment Information - Net Sales by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Net sales	$ 25,202	$ 42,295	$ 59,171	$ 85,422
UNITED STATES
Net sales	16,585	28,908	41,533	58,740
Non-US [Member]
Net sales	$ 8,617	$ 13,387	$ 17,638	$ 26,682