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Pension (Tables)
6 Months Ended
Jun. 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 June 30,  Six Months Ended June 30,
   2019  2018  2019  2018
             
Service cost  $9   $9   $18   $18 
                     
Interest cost  $9   $10   $18   $20 
Expected return on plan assets   (14)   (17)   (29)   (34)
Amortization of actuarial loss   22    22    44    44 
     Total non-service cost  $17   $15   $33   $30 
                     
Net periodic pension cost  $26   $24   $51   $48