Note H - Segment Information - Net Sales by Geographic Region (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
UNITED STATES
Net sales	28,908	25,402	58,740	48,897
Non-US [Member]
Net sales	$ 13,387	$ 12,325	$ 26,682	$ 27,170