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Defined Benefit Plans (Tables)
3 Months Ended
Mar. 27, 2013
Compensation and Retirement Disclosure [Abstract]  
Components of net periodic benefit cost
The components of net periodic benefit cost were as follows:

 
Pension Plan
 
Other Defined Benefit Plans
 
Quarter Ended
 
Quarter Ended
 
March 27, 2013
 
March 28, 2012
 
March 27, 2013
 
March 28, 2012
 
(In thousands)
Service cost
$
100

 
$
84

 
$

 
$

Interest cost
754

 
789

 
28

 
29

Expected return on plan assets
(1,124
)
 
(1,012
)
 

 

Amortization of net loss
419

 
428

 
18

 
13

Net periodic benefit cost
$
149

 
$
289

 
$
46

 
$
42