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Employee Benefits (Tables)
3 Months Ended
Apr. 05, 2014
Employee Benefits [Abstract]  
Schedule of net periodic pension cost for pension plans
   
First Quarter
 
   
Period from January 5, 2014 
to April 5, 2014
   
Period from December 30, 
2012 to March 30, 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