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Employee Benefits (Tables)
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Pension and Other Defined Contribution Retirement Plan Expenses
Pension and other defined contribution retirement plan expenses included the following components:
(DOLLARS IN THOUSANDS)
U.S. Plans
Three Months Ended March 31,
2020
 
2019
Service cost for benefits earned(1)
$
400

 
$
474

Interest cost on projected benefit obligation(2)
4,263

 
5,453

Expected return on plan assets(2)
(7,083
)
 
(6,983
)
Net amortization and deferrals(2)
1,858

 
1,275

Net periodic benefit (income) cost
$
(562
)
 
$
219


(DOLLARS IN THOUSANDS)
Non-U.S. Plans
Three Months Ended March 31,
2020
 
2019
Service cost for benefits earned(1)
$
5,940

 
$
4,873

Interest cost on projected benefit obligation(2)
3,245

 
4,435

Expected return on plan assets(2)
(11,614
)
 
(10,904
)
Net amortization and deferrals(2)
3,834

 
2,922

Net periodic benefit (income) cost
$
1,405

 
$
1,326

_______________________ 
(1)
Included as a component of Operating profit.
(2)
Included as a component of Other loss (income), net.
Postretirement Benefits Other Than Pension Expenses
Expense recognized for postretirement benefits other than pensions included the following components: 
 
Three Months Ended March 31,
(DOLLARS IN THOUSANDS)
2020
 
2019
Service cost for benefits earned
$
143

 
$
148

Interest cost on projected benefit obligation
474

 
578

Net amortization and deferrals
(1,153
)
 
(1,194
)
Total postretirement benefit income
$
(536
)
 
$
(468
)