Note A - Description of Business and Summary of Significant Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	May 31, 2024
Gain (Loss), Foreign Currency Transaction, before Tax	$ (377)	$ (373)
Accounts Receivable, Allowance for Credit Loss	$ 1,383	1,221
Impairment of Long-Lived Assets to be Disposed of		4,100
Permanently Idled, Number of Facilities	1
Property, Plant and Equipment, Net	$ 58,074	$ 38,650
Number of Operating Segments	2
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
Permanently Idled [Member]
Property, Plant and Equipment, Net	$ 3,000
Katsa Oy [Member]
Business Acquisition, Percentage of Voting Interests Acquired			100.00%