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Employee Benefits (Tables)
 6 Months Ended
Jun. 28, 2014
Employee Benefits [Abstract]  
Components of net periodic benefit costs
The Company sponsors several qualified and nonqualified pension plans and other postretirement benefit plans for certain of its employees.  The components of net periodic benefit cost are as follows:

   
For the Quarter Ended
   
For the Six Months Ended
 
(In thousands)
 
June 28, 2014
   
June 29, 2013
   
June 28, 2014
   
June 29, 2013
 
       
Pension benefits:
                       
Service cost
 
$
175
   
$
326
   
$
397
   
$
701
 
Interest cost
   
2,059
     
2,017
     
4,127
     
4,047
 
Expected return on plan assets
   
(3,201
)
   
(2,892
)
   
(6,402
)
   
(5,690
)
Amortization of net loss
   
189
     
978
     
377
     
1,970
 
                                 
Net periodic benefit (income) cost
 
$
(778
)
 
$
429
   
$
(1,501
)
 
$
1,028
 
                                 
Other benefits:
                               
    Service cost
 
$
87
   
$
70
   
$
176
   
$
138
 
    Interest cost
   
186
     
32
     
363
     
312
 
    Amortization of prior service (credit) cost
   
(1
)
   
1
     
(1
)
   
3
 
    Amortization of net gain
   
(45
)
   
(58
)
   
(109
)
   
(84
)
                                 
Net periodic benefit cost
 
$
227
   
$
45
   
$
429
   
$
369