v3.26.1
Note M - Pension and Other Postretirement Benefit Plans (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Defined Benefit Plan, Cost of Premium for Health Coverage Plan, Percentage 100.00%  
Defined Benefit Plan, Accumulated Benefit Obligation $ 62,173 $ 66,424
Defined Benefit Plan, Weighted Average Healthcare Cost, Trend Rate 6.20% 3.70%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 100.00% 100.00%
Defined Contribution Plan, Cost $ 2,683 $ 2,447
Pension Plan [Member]    
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year 1,979  
Other Postretirement Benefits Plan [Member]    
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year $ 591  
UNITED STATES    
Defined Benefit Plan, Expected Long-term Return on Plan Assets 6.25%  
Common Stock Held by U.S Pension Plans [Member]    
Defined Benefit Plan, Plan Assets, Employer, Related Party, Number of Shares (in shares) 34,211 98,211
Defined Benefit Plan, Plan Assets, Employer, Related Party, Amount $ 794 $ 867
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 1.70% 1.70%