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Employee Benefits (Tables)
6 Months Ended
Jul. 05, 2014
Employee Benefits [Abstract]  
Schedule of net periodic pension cost for pension plans
 
                 
   
Second Quarter
 
   
Period from April 6, 2014
to July 5, 2014
   
Period from March 31, 2013
to June 29, 2013
 
                 
Service cost
  $ 264     $ 548  
Interest cost on projected benefit obligation
    1,280       1,188  
Expected return on plan assets
    (1,510 )     (1,306 )
Amortization of unrecognized loss
    191       718  
Net periodic pension cost
  $ 225     $ 1,148  
                 
   
Six Months Ended
 
   
Period from January 5, 2014
to July 5, 2014
   
Period from December 30,
2012 to June 29, 2013
 
                 
Service cost
  $ 528     $ 1,096  
Interest cost on projected benefit obligation
    2,560       2,375  
Expected return on plan assets
    (3,020 )     (2,612 )
Amortization of unrecognized loss
    382       1,436  
Net periodic pension cost
  $ 450     $ 2,295