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Pension and Other Postretirement Benefits
 9 Months Ended
Sep. 30, 2019
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits

Pension and other postretirement benefits expenses consisted of the following:
 
Three Months Ended
September 30,
 
Nine Months Ended September 30,
Pensions
2019
 
2018
 
2019
 
2018
Service cost
$
1,356

 
$
1,491

 
$
4,064

 
$
4,479

Interest cost
4,539

 
4,336

 
13,647

 
13,028

Expected return on plan assets
(7,389
)
 
(7,615
)
 
(21,816
)
 
(22,392
)
Amortization of prior service cost
101

 
141

 
302

 
422

Amortization of actuarial losses
2,215

 
2,879

 
6,658

 
8,719

Settlement loss
93

 
—

 
340

 
—

Net periodic benefit cost
$
915

 
$
1,232

 
$
3,195

 
$
4,256


 
Three Months Ended September 30,
 
Nine Months Ended September 30,
Other Postretirement Benefits
2019
 
2018
 
2019
 
2018
Service cost
$
18

 
$
22

 
$
53

 
$
64

Interest cost
335

 
338

 
1,008

 
1,019

Amortization of prior service cost
6

 
5

 
19

 
15

Amortization of actuarial losses
3

 
135

 
10

 
421

Net periodic benefit cost
$
362

 
$
500

 
$
1,090

 
$
1,519



The service cost component of net periodic benefit cost is included within cost of sales and selling and administrative expenses. The components of net periodic benefit cost other than the service cost component are included in Other Income (Expense) on the Consolidated Statements of Income.
In July 2019, the Company contributed $15,000 of discretionary contributions to its U.S Qualified pension plans. The Company currently does not plan to make any additional discretionary contributions to its U.S. Qualified pension plans, however approximately $5,000 is expected to be made into its U.S. Non-qualified and international pension plans throughout 2019.