v3.26.1
Note 11. Stock Compensation Plans - Performance Share Activity (Details) - Performance Shares - 2023 Equity Incentive Plan [Member] - $ / shares
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Share-based Compensation Arrangements      
Performance Shares, Shares Outstanding, Beginning of Period 544,063    
Share-based Compensation Arrangements, Grants in Period 121,261    
Performance Shares, Shares Vested (182,839) (93,870) (82,744)
Performance Shares, Shares Forfeited (3,829)    
Performance Shares, Shares Outstanding, End of Period 478,656 544,063  
Performance Shares, Weighted Average Grant Date Fair Value of Shares Outstanding, Beginning of Period $ 24.33    
Share-based Compensation Arrangements, Grants in Period, Weighted Average Grant Date Fair Value 28.35    
Performance Shares, Weighted Average Grant Date Fair Value of Shares Vested 23.35    
Performance Shares, Weighted Average Grant Date Fair Value of Shares Forfeited 23.45    
Performance Shares, Weighted Average Grant Date Fair Value of Shares Outstanding, End of Period $ 25.32 $ 24.33