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RETIREMENT AND POSTRETIREMENT BENEFIT PLANS
 3 Months Ended
Mar. 31, 2019
Retirement Benefits [Abstract]  
RETIREMENT AND POSTRETIREMENT BENEFIT PLANS
RETIREMENT AND POSTRETIREMENT BENEFIT PLANS
The components of total pension cost were as follows:
 
Three Months Ended March 31,
 
2019
 
2018
 
U.S. pension plans
 
Non-U.S. pension plans
 
U.S. pension plans
 
Non-U.S. pension plans
Service cost
$
35

 
$
728

 
$
35

 
$
851

Interest cost
4,653

 
936

 
4,494

 
970

Expected return on plan assets
(6,245
)
 
(1,124
)
 
(6,916
)
 
(1,274
)
Amortization of prior service cost
—

 
16

 
—

 
1

Amortization of net loss
413

 
585

 
384

 
575

Settlement charges (1)
—

 
—

 
758

 
—

Defined benefit plans
(1,144
)
 
1,141

 
(1,245
)
 
1,123

Multi-employer plans
—

 
247

 
—

 
227

Defined contribution plans
5,908

 
499

 
5,894

 
829

Total pension cost
$
4,764

 
$
1,887

 
$
4,649

 
$
2,179



(1) Pension settlement charges resulting from lump sum pension payments in the three months ended March 31, 2018.
The defined benefit plan components of Total pension cost, other than service cost, are included in Other income (expense) in the Company's Consolidated Statements of Income.