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Retirement Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2024
Retirement Plans [Abstract]      
Service period of participants not impacted by pension plan amendment 15 years    
Age of plan participants not impacted by pension plan amendment 50 years    
Service period of participants who are age fifty not impacted by pension plan amendment 10 years    
Higman [Member]      
Retirement Plans [Abstract]      
Pension contributions $ 200    
Higman [Member] | Scenario Forecast [Member]      
Retirement Plans [Abstract]      
Pension contributions     $ 1,600
Pension Plan [Member]      
Components of net periodic benefit cost [Abstract]      
Service cost 874 $ 892  
Interest cost 4,320 4,606  
Expected return on plan assets (6,219) (5,723)  
Amortization of actuarial (gain) loss (473) 0  
Net periodic benefit cost (1,498) (225)  
SERP [Member]      
Components of net periodic benefit cost [Abstract]      
Service cost 0 0  
Interest cost 10 11  
Expected return on plan assets 0 0  
Amortization of actuarial (gain) loss 8 6  
Net periodic benefit cost 18 17  
Other Postretirement Benefits Plan [Member]      
Components of net periodic benefit cost [Abstract]      
Interest cost 5 6  
Amortization of actuarial (gain) loss (70) (86)  
Net periodic benefit cost $ (65) $ (80)