Note N - Segment Information - Net Sales by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Net sales	$ 118,876	$ 138,290
UNITED STATES
Net sales	66,912	67,000
Non-US [Member]
Net sales	$ 51,964	$ 71,290