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Employee Benefit Plans (Tables)
3 Months Ended
Mar. 31, 2019
Retirement Benefits [Abstract]  
Schedule of periodic costs for employee retirement benefit plan

The following tables set forth information relating to the Company’s periodic costs for its employee retirement benefit plans:

 

   (In Thousands)
   Pension Benefits  Other Benefits
   Three Months Ended March 31,
   2019  2018  2019  2018
             
Service Cost  $543   $607   $210   $284 
Interest Cost   857    765    496    474 
Expected Return on Assets   (1,173)   (1,218)   (613)   (637)
Amortization of Unrecognized Losses   404    415    330    447 
Amortization of Unrecognized Prior Service Credit               (402)
Net Periodic Benefit Cost*  $631   $569   $423   $166 

 

*Service cost is included in Operations and Maintenance expense on Consolidated Statements of Income; all other amounts are included in Other Income/Expense, net.