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Retirement Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Components of Pension and Postretirement Health Care Expense
The components of pension and postretirement health care expense (income) are set forth below:

 
THREE MONTHS ENDED
 
SIX MONTHS ENDED
 
JUNE 30
 
JUNE 30
 
2015
 
2014
 
2015
 
2014
U.S. Pension and Postretirement Health Care
 
 
 
 
 
 
 
Service cost
$
18

 
$
17

 
$
35

 
$
35

Interest cost
673

 
695

 
1,390

 
1,489

Expected return on plan assets
(1,205
)
 
(1,141
)
 
(2,482
)
 
(2,408
)
Amortization of actuarial loss
274

 
190

 
585

 
434

Amortization of prior service credit
(15
)
 
(17
)
 
(29
)
 
(36
)
Total
$
(255
)
 
$
(256
)
 
$
(501
)
 
$
(486
)
Non-U.S. Pension
 
 
 
 
 
 
 
Interest cost
$
40

 
$
50

 
$
79

 
$
99

Expected return on plan assets
(71
)
 
(75
)
 
(141
)
 
(149
)
Amortization of actuarial loss
12

 
19

 
23

 
35

Total
$
(19
)
 
$
(6
)
 
$
(39
)
 
$
(15
)