Note N - Segment Information - Capital Expenditures by Geographical Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Payments to Acquire Property, Plant, and Equipment, Total	$ 5,107	$ 4,541
UNITED STATES
Payments to Acquire Property, Plant, and Equipment, Total	2,336	1,530
Europe [Member]
Payments to Acquire Property, Plant, and Equipment, Total	$ 2,771	$ 3,011