Note M - Pension and Other Postretirement Benefit Plans - Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets (Details) - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Fair value of assets, Balance	$ 7,080	$ 6,264
Relating to assets still held at reporting date	480	1,362
Purchases, sales and settlements, net	(1,137)	(546)
Fair value of assets, Balance	$ 6,423	$ 7,080

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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+ Details