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Net Periodic Benefit Cost
 3 Months Ended
Mar. 31, 2012
Compensation and Retirement Disclosure [Abstract]  
PENSION AND OTHER POSTRETIREMENT BENEFITS DISCLOSURE
NET PERIODIC BENEFIT COST
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 March 31:
 
U.S. Pension Benefits
 
Non-U.S. Pension Benefits
 
Other U.S. Post-retirement Benefits
 
2012
 
2011
 
2012
 
2011
 
2012
 
2011
Service cost, net
$
114

 
$
83

 
$
3,638

 
$
3,357

 
$
83

 
$
76

Interest cost on projected benefit obligations
1,523

 
1,606

 
5,605

 
5,914

 
135

 
183

Expected return on plan assets
(1,741
)
 
(1,875
)
 
(8,234
)
 
(8,148
)
 
—

 
—

Recognition of prior service cost
—

 
—

 
(357
)
 
(349
)
 
—

 
—

Recognition of actuarial losses/(gains)
1,916

 
1,276

 
613

 
285

 
(188
)
 
(173
)
Net periodic pension cost/(credit)
$
1,812

 
$
1,090

 
$
1,265

 
$
1,059

 
$
30

 
$
86



As previously disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2011, the Company expects to make employer contributions of approximately $7.4 million and $20.6 million to its U.S. pension plan and non-U.S. pension plans and employer contributions of approximately $1.1 million to its U.S. post-retirement medical plan during the year ended December 31, 2012. These estimates may change based upon several factors, including fluctuations in currency exchange rates, actual returns on plan assets and changes in legal requirements.