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Pension and Other Post-Retirement Benefit Plans
 3 Months Ended
Mar. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Pension and Other Post-Retirement Benefit Plans
Pension and Other Post-Retirement Benefit Plans
We sponsor pension and other post-retirement benefit plans that cover certain hourly and salaried employees in the United States and United Kingdom. All of our pension plans are inactive or frozen to new employees. Our policy is to make annual contributions to the plans to fund the normal cost as required by local regulations. In addition, we have a post-retirement benefit plan for certain U.S. operations, retirees and their dependents.
The components of net periodic (benefit) cost related to pension and other post-retirement benefit plans is as follows:
 
 
U.S. Pension Plans
 
Non-U.S. Pension Plans
 
Other Post-Retirement Benefit Plans
 
Three Months Ended March 31,
 
Three Months Ended March 31,
 
Three Months Ended March 31,
 
2016
 
2015
 
2016
 
2015
 
2016
 
2015
Service cost
$
32

 
$
29

 
$
—

 
$
—

 
$
—

 
$
—

Interest cost
469

 
463

 
359

 
366

 
4

 
4

Expected return on plan assets
(678
)
 
(668
)
 
(398
)
 
(395
)
 
—

 
—

Amortization of prior service cost
—

 
—

 
—

 
—

 
2

 
2

Recognized actuarial loss (gain)
107

 
117

 
55

 
6

 
(25
)
 
(30
)
Net (benefit) cost
$
(70
)
 
$
(59
)
 
$
16

 
$
(23
)
 
$
(19
)
 
$
(24
)
We expect to contribute approximately $3.0 million to our pension plans and our other post-retirement benefit plans in 2016. As of March 31, 2016, $0.8 million of contributions have been made to our pension plans.