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Employee Benefits (Tables)
 3 Months Ended
Mar. 31, 2019
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,
2019
 
2018
Service cost for benefits earned(1)
$
474

 
$
596

Interest cost on projected benefit obligation(2)
5,453

 
4,790

Expected return on plan assets(2)
(6,983
)
 
(7,739
)
Net amortization and deferrals(2)
1,275

 
1,549

Net periodic benefit (income) cost
$
219

 
$
(804
)

(DOLLARS IN THOUSANDS)
Non-U.S. Plans
Three Months Ended March 31,
2019
 
2018
Service cost for benefits earned(1)
$
4,873

 
$
4,470

Interest cost on projected benefit obligation(2)
4,435

 
4,338

Expected return on plan assets(2)
(10,904
)
 
(12,032
)
Net amortization and deferrals(2)
2,922

 
2,972

Net periodic benefit (income) cost
$
1,326

 
$
(252
)
_______________________ 
(1)
Included as a component of Operating Profit.
(2)
Included as a component of Other Income (Expense), 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)
2019
 
2018
Service cost for benefits earned
$
148

 
$
195

Interest cost on projected benefit obligation
578

 
654

Net amortization and deferrals
(1,194
)
 
(1,189
)
Total postretirement benefit income
$
(468
)
 
$
(340
)