Note B - Acquisition of Katsa Oy - Schedule of Business Acquisitions (Details) - USD ($) $ in Thousands		12 Months Ended
	May 31, 2024	Jun. 30, 2024	Jun. 30, 2023
Gain on bargain purchase		$ 3,724	$ 0
Katsa Oy [Member]
Cash purchase price	$ 25,100
Final working capital adjustment	800
Total consideration	25,900
Cash	2,700
Trade accounts receivable, net	7,400
Inventories, net	10,600
Prepaid expenses	300
Other	800
Property, plant and equipment, net	13,900
Right-of-use operating lease assets	500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	3,400
Total assets acquired	39,600
Accounts payable	1,800
Accrued liabilities	5,300
Lease obligations	400
Deferred income taxes	2,500
Total liabilities assumed	10,000
Total identified net assets acquired (in millions):	29,600
Gain on bargain purchase	3,700	$ 3,724	$ (0)
Purchase price consideration	$ 25,900