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RETIREMENT BENEFIT OBLIGATIONS (Tables)
3 Months Ended
Mar. 31, 2021
Key Weighted Average Assumptions Used in Determining Benefit Plan Costs and Obligations
The following table includes the key weighted average assumptions used in determining the Company’s benefit plan costs and obligations:
 
Used to Determine Plan Costs
  
2021
    2020  
Discount Rate
  
 
2.50
    3.25
Rate of Compensation Increase
  
 
3.00
    3.00
Expected Long-term rate of return on plan assets
  
 
7.50
    7.40
Health Care Cost Trend Rate Assumed for Next Year
  
 
6.60
    7.00
Ultimate Health Care Cost Trend Rate
  
 
4.50
    4.50
Year that Ultimate Health Care Cost Trend Rate is reached
  
 
2029
 
    2029  
Components of Retirement Plan Costs
The following table provides the components of the Company’s Retirement plan costs ($000’s):
 
    
Pension Plan
   
PBOP Plan
   
SERP
 
Three Months Ended March 31,
  
2021
    2020    
2021
    2020    
2021
    2020  
Service Cost
  
$
868
 
  $ 831    
$
758
 
  $ 675    
$
89
 
  $ 71  
Interest Cost
  
 
1,251
 
    1,444    
 
685
 
    780    
 
114
 
    137  
Expected Return on Plan Assets
  
 
(2,423
    (2,255  
 
(627
    (516  
 
—  
 
    —    
Prior Service Cost Amortization
  
 
75
 
    80    
 
302
 
    303    
 
14
 
    14  
Actuarial Loss Amortization
  
 
2,022
 
    1,618    
 
262
 
    186    
 
372
 
    259  
    
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Sub-total
  
 
1,793
      1,718    
 
1,380
 
    1,428    
 
589
 
    481  
Amounts Capitalized and Deferred
  
 
(713
    (630  
 
(662
    (532  
 
(178
    (138
    
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Net Periodic Benefit Cost Recognized
  
$
1,080
 
  $ 1,088    
$
718
 
  $ 896    
$
411
 
  $ 343