Note B - Acquisitions - Schedule of Business Acquisitions (Details) - USD ($) $ in Thousands			12 Months Ended
	Feb. 14, 2025	May 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Goodwill			$ 2,892	$ 0
Gain on bargain purchase			0	3,724
Kobelt Manufacturing Co. [Member]
Cash purchase price	$ 17,102
Earnout	374
Total consideration	17,476
Cash	240
Trade accounts receivable	1,881
Inventories	5,984
Other current assets	290
Property, plant and equipment	5,031
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	2,847
Total assets acquired	16,273
Accounts payable	924
Accrued liabilities	520
Deferred tax liability	159
Total liabilities assumed	1,603
Total identified net assets acquired:	14,670
Goodwill	2,806		2,806
Purchase price consideration	17,476
Property, plant and equipment, net	5,031
Accrued liabilities	520
Total identified net assets acquired (in millions):	17,476
Purchase price consideration	$ 17,476
Katsa Oy [Member]
Cash purchase price		$ 25,145
Total consideration		25,884
Cash		2,706
Trade accounts receivable		7,400
Inventories		10,694
Other current assets		786
Property, plant and equipment		13,853
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill		3,377
Total assets acquired		39,635
Accounts payable		1,822
Accrued liabilities		5,360
Deferred tax liability		2,435
Total liabilities assumed		10,027
Purchase price consideration		29,608
Final working capital adjustment		739
Prepaid expenses		312
Property, plant and equipment, net		13,853
Right-of-use operating lease assets		507
Accrued liabilities		5,360
Lease obligations		410
Total identified net assets acquired (in millions):		29,608
Gain on bargain purchase		3,724	$ (0)	$ 3,724
Purchase price consideration		$ 25,884