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Net Periodic Benefit Cost (Tables)
 9 Months Ended
Sep. 30, 2017
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs [Table Text Block]
Net periodic pension cost for the Company’s defined benefit pension plans and U.S. post-retirement medical plan includes the following components for the three months ended September 30:
 
U.S. Pension Benefits
 
Non-U.S. Pension Benefits
 
Other U.S. Post-retirement Benefits
 
Total
 
2017
 
2016
 
2017
 
2016
 
2017
 
2016
 
2017
 
2016
Service cost, net
$
141

 
$
103

 
$
4,008

 
$
4,216

 
$
—

 
$
—

 
4,149

 
4,319

Interest cost on projected benefit obligations
1,094

 
1,014

 
2,269

 
2,542

 
18

 
19

 
3,381

 
3,575

Expected return on plan assets
(1,684
)
 
(1,868
)
 
(7,910
)
 
(8,177
)
 
—

 
—

 
(9,594
)
 
(10,045
)
Recognition of prior service cost
—

 
—

 
(1,611
)
 
(1,288
)
 
(195
)
 
(469
)
 
(1,806
)
 
(1,757
)
Recognition of actuarial losses/(gains)
1,639

 
1,907

 
5,676

 
4,519

 
(474
)
 
(673
)
 
6,841

 
5,753

Net periodic pension cost/(credit)
$
1,190

 
$
1,156

 
$
2,432

 
$
1,812

 
$
(651
)
 
$
(1,123
)
 
$
2,971

 
$
1,845



Net periodic pension cost for the Company’s defined benefit pension plans and U.S. post-retirement medical plan includes the following components for the nine months ended September 30:

 
U.S. Pension Benefits
 
Non-U.S. Pension Benefits
 
Other U.S. Post-retirement Benefits
 
Total
 
2017
 
2016
 
2017
 
2016
 
2017
 
2016
 
2017
 
2016
Service cost, net
$
423

 
$
328

 
$
12,086

 
$
12,606

 
$
—

 
$
—

 
12,509

 
12,934

Interest cost on projected benefit obligations
3,282

 
3,414

 
6,294

 
7,967

 
54

 
57

 
9,630

 
11,438

Expected return on plan assets
(5,052
)
 
(5,912
)
 
(22,795
)
 
(25,020
)
 
—

 
—

 
(27,847
)
 
(30,932
)
Recognition of prior service cost
—

 
—

 
(4,439
)
 
(3,856
)
 
(585
)
 
(1,408
)
 
(5,024
)
 
(5,264
)
Recognition of actuarial losses/(gains)
4,917

 
5,699

 
16,657

 
13,585

 
(1,422
)
 
(2,019
)
 
20,152

 
17,265

Settlement charge
—

 
7,963

 
—

 
—

 
—

 
—

 
—

 
7,963

Net periodic pension cost/(credit)
$
3,570

 
$
11,492

 
$
7,803

 
$
5,282

 
$
(1,953
)
 
$
(3,370
)
 
$
9,420

 
$
13,404