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Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2024
Benefit Plans [Abstract]  
Net Periodic Benefit
The table below outlines the components of the Company’s net periodic benefit recognized during the three and six months ended June 30, 2024 and 2023 for its pension and other postretirement benefit plans:

 
Three months ended June 30,
  
 
Pension Benefits
    
Other Postretirement Benefits
  
(dollars in thousands)
  
2024
    
2023
    
2024
    
2023
  

                       
Service cost
  
$
-
    
$
-
    
$
4
    
$
3
  
Interest cost
    
289
      
304
      
72
      
66
  
Expected return on plan assets
    
(762
)
    
(661
)
    
(332
)
    
(290
)
Amortization of net gain
    
(19
)
    
-
      
(183
)
    
(114
)
Amortization of prior service cost
    
-
      
-
      
3
      
3
  
Net periodic benefit
  
$
(492
)
  
$
(357
)
  
$
(436
)
  
$
(332
)


 
Six months ended June 30,
  

 
Pension Benefits
    
Other Postretirement Benefits
  
(dollars in thousands)
  
2024
    
2023
    
2024
    
2023
  

                       
Service cost
  
$
-
    
$
-
    
$
9
    
$
5
  
Interest cost
    
578
      
606
      
144
      
132
  
Expected return on plan assets
    
(1,524
)
    
(1,341
)
    
(663
)
    
(579
)
Amortization of net gain
    
(38
)
    
-
      
(367
)
    
(228
)
Amortization of prior service cost
    
-
      
-
      
6
      
6
  
Net periodic benefit
  
$
(984
)
  
$
(735
)
  
$
(871
)
  
$
(664
)