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Defined Benefit Plans (Tables)
9 Months Ended
Sep. 25, 2013
Compensation and Retirement Disclosure [Abstract]  
Components of net periodic benefit cost
The components of net periodic benefit cost were as follows:

 
Quarter Ended
 
Three Quarters Ended
 
September 25, 2013
 
September 26, 2012
 
September 25, 2013
 
September 26, 2012
 
(In thousands)
Pension plan:
 
 
 
 
 
 
 
Service cost
$
100

 
$
95

 
$
300

 
$
285

Interest cost
745

 
800

 
2,233

 
2,400

Expected return on plan assets
(1,122
)
 
(1,024
)
 
(3,366
)
 
(3,042
)
Amortization of net loss
413

 
441

 
1,240

 
1,322

Net periodic benefit cost
$
136

 
$
312

 
$
407

 
$
965

 
 
 
 
 
 
 
 
Other defined benefit plans:
 
 
 
 
 
 
 
Interest cost
$
28

 
$
29

 
$
84

 
$
87

Amortization of net loss
17

 
13

 
53

 
39

Net periodic benefit cost
$
45

 
$
42

 
$
137

 
$
126