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Pension (Tables)
9 Months Ended
Sep. 30, 2019
Pension And Profit Sharing Tables Abstract  
Components of Net Benefit Cost

Components of net periodic benefit cost are as follows (in thousands):

 

   Three Months Ended
September 30,
  Nine Months Ended
September 30,
   2019  2018  2019  2018
             
Service cost  $9   $7   $27   $25 
                     
Interest cost  $9   $10   $27   $30 
Expected return on plan assets   (14)   (17)  (43)   (51)
Amortization of actuarial loss   22    21   64    65 
     Total non-service cost  $17   $14   $48   $44 
                     
Net periodic pension cost  $26   $21   $75   $69