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Employee Benefits
 9 Months Ended
Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Employee Benefits
Employee Benefits:

Pension and other defined contribution retirement plan expenses included the following components:
U.S. Plans
Three Months Ended September 30,
 
Nine Months Ended September 30,
(DOLLARS IN THOUSANDS)
2016
 
2015
 
2016
 
2015
Service cost for benefits earned
$
771

 
$
984

 
$
2,314

 
$
2,952

Interest cost on projected benefit obligation
6,007

 
5,954

 
18,020

 
17,860

Expected return on plan assets
(8,069
)
 
(8,083
)
 
(24,208
)
 
(24,248
)
Net amortization and deferrals
1,387

 
5,203

 
4,159

 
15,607

Net periodic benefit cost
96

 
4,058

 
285

 
12,171

Defined contribution and other retirement plans
1,211

 
1,847

 
5,823

 
6,075

Total expense
$
1,307

 
$
5,905

 
$
6,108

 
$
18,246

 
 
 
 
 
 
 
 
Non-U.S. Plans
Three Months Ended September 30,
 
Nine Months Ended September 30,
(DOLLARS IN THOUSANDS)
2016
 
2015
 
2016
 
2015
Service cost for benefits earned
$
3,863

 
$
4,220

 
$
11,443

 
$
12,659

Interest cost on projected benefit obligation
6,372

 
6,283

 
18,890

 
18,848

Expected return on plan assets
(11,985
)
 
(12,712
)
 
(35,526
)
 
(38,137
)
Net amortization and deferrals
3,286

 
3,397

 
9,738

 
10,189

Net periodic benefit cost
1,536

 
1,188

 
4,545

 
3,559

Defined contribution and other retirement plans
1,705

 
1,923

 
5,175

 
5,211

Total expense
$
3,241

 
$
3,111

 
$
9,720

 
$
8,770


The Company expects to contribute a total of approximately $30 million to its non-U.S. pension plans and $20 million to its U.S. pension plans during 2016. During the nine months ended September 30, 2016, $20.0 million of contributions were made to the qualified U.S. pension plans, $21.1 million of contributions were made to the non-U.S. pension plans and $3.7 million of benefit payments were made with respect to the Company's non-qualified U.S. pension plan.
Expense recognized for postretirement benefits other than pensions included the following components: 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(DOLLARS IN THOUSANDS)
2016
 
2015
 
2016
 
2015
Service cost for benefits earned
$
214

 
$
301

 
$
644

 
$
901

Interest cost on projected benefit obligation
787

 
1,082

 
2,360

 
3,246

Net amortization and deferrals
(1,355
)
 
(712
)
 
(4,065
)
 
(2,134
)
Total postretirement benefit (income) expense
$
(354
)
 
$
671

 
$
(1,061
)
 
$
2,013


The Company expects to contribute approximately $5 million to its postretirement benefits other than pension plans during 2016. In the nine months ended September 30, 2016, $3.7 million of contributions were made.