Note A - Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Foreign Currency Transaction Gain (Loss), before Tax, Total	$ (2,108)	$ (570)
Accounts Receivable, Allowance for Credit Loss, Ending Balance	1,870	$ 1,740
Impairment of Long-Lived Assets to be Disposed of	$ 4,267
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	40 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	15 years