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Employee Benefit Plans (Tables)
3 Months Ended
Apr. 01, 2012
Compensation and Retirement Disclosure [Abstract]  
Components of Net Periodic Benefit Cost (Credit)
The following table summarizes the components of net periodic benefit cost (credit) for the Company’s various defined benefit employee pension and postretirement plans for the three months ended April 1, 2012 and April 3, 2011:
 
 
Defined Benefit
Pension Benefits
 
Postretirement
Medical Benefits
 
Three Months Ended
 
April 1,
2012
 
April 3,
2011
 
April 1,
2012
 
April 3,
2011
 
(In thousands)
Service cost
$
980

 
$
972

 
$
28

 
$
21

Interest cost
5,815

 
6,318

 
37

 
41

Expected return on plan assets
(5,142
)
 
(5,648
)
 
(219
)
 
(221
)
Amortization of prior service costs
(60
)
 
(55
)
 

 
(63
)
Net periodic benefit cost (credit)
$
1,593

 
$
1,587

 
$
(154
)
 
$
(222
)