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Benefit Plans
 3 Months Ended
Mar. 31, 2021
Benefit Plans [Abstract]  
Benefit Plans
(3) Benefit Plans

The table below outlines the components of the Company's net periodic benefit recognized during the three months ended March 31, 2021 and 2020 for its pension and other postretirement benefit plans:

 
Three months ended March 31,
  
 
Pension Benefits
    
Other Postretirement Benefits
  
(dollars in thousands)
  
2021
    
2020
    
2021
    
2020
  
                         
Service cost
  
$
11
      
12
      
22
      
19
  
Interest cost
    
216
      
266
      
44
      
54
  
Expected return on plan assets
    
(761
)
    
(819
)
    
(327
)
    
(296
)
Amortization of net gain
    
-
      
-
      
(228
)
    
(166
)
Amortization of prior service credit
    
-
      
-
      
(52
)
    
(49
)
Net periodic benefit
  
$
(534
)
    
(541
)
    
(541
)
    
(438
)

The Company does not expect to contribute to its pension and postretirement benefit plans in 2021.  As of March 31, 2021, no contributions have been made; however, this decision is reviewed each quarter and is subject to change based upon market conditions.

Since 2003, the Company has not subsidized retiree medical insurance premiums.  However, it continues to provide medical benefits and postretirement medical benefits to a limited number of current and retired executives in accordance with the terms of their employment contracts.