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Employee Benefits (Tables)
3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Schedule of Components of Net Periodic Pension Cost and Other Changes in Plan Assets and Benefit
The following table summarizes the components of net periodic pension cost for the periods presented:
 
Three Months Ended March 31,
(dollars in thousands)
2020
 
2019
Components of Net Periodic Pension Cost
 
 
 
 
 
Interest cost on projected benefit obligation
 
$
891

 
 
$
989

Expected return on plan assets
 
(972
)
 
 
(1,180
)
Net amortization
 
384

 
 
394

Net Periodic Pension Expense
 
$
303

 
 
$
203