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Retirement Benefit Plans
 6 Months Ended
Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Retirement Benefit Plans
Retirement Benefit Plans

The Company maintains various defined benefit pension plans that provide benefits based on years of service and average compensation during certain periods. The Company's policy is to make contributions to fund these plans within the range allowed by applicable regulations. Plan assets consist primarily of publicly traded stocks and government and corporate bonds. Pension benefits were frozen for all employees as of December 31, 2013. All eligible employees of the Company, including employees whose pension benefits are frozen, receive retirement benefits under defined contribution retirement plans.

The Company also maintains postretirement health care plans which provide benefits to eligible retired employees. All health care plans of the Company have a cap on the Company's share of the costs. These plans have no assets. Under the Company's current policy, plan benefits are funded at the time they are due to participants.

The components of pension and postretirement health care expense (income) are set forth below:

 
THREE MONTHS ENDED
 
SIX MONTHS ENDED
 
JUNE 30
 
JUNE 30
 
2016
 
2015
 
2016
 
2015
U.S. Pension and Postretirement Health Care
 
 
 
 
 
 
 
Service cost
$
18

 
$
18

 
$
35

 
$
35

Interest cost
690

 
673

 
1,408

 
1,390

Expected return on plan assets
(1,195
)
 
(1,205
)
 
(2,465
)
 
(2,482
)
Amortization of actuarial loss
246

 
274

 
529

 
585

Amortization of prior service credit
(12
)
 
(15
)
 
(24
)
 
(29
)
Total
$
(253
)
 
$
(255
)
 
$
(517
)
 
$
(501
)
Non-U.S. Pension
 
 
 
 
 
 
 
Interest cost
$
37

 
$
40

 
$
72

 
$
79

Expected return on plan assets
(64
)
 
(71
)
 
(124
)
 
(141
)
Amortization of actuarial loss
7

 
12

 
13

 
23

Total
$
(20
)
 
$
(19
)
 
$
(39
)
 
$
(39
)