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Employee Benefits
 6 Months Ended
Jul. 02, 2011
Employee Benefits [Abstract]  
Employee Benefits
6. Employee Benefits
Defined Benefit Pension Plans
Most of our hourly employees participate in noncontributory defined benefit pension plans. These include a plan that is administered solely by us (the “hourly pension plan”) and union-administered multiemployer plans. Our funding policy for the hourly pension plan is based on actuarial calculations and the applicable requirements of federal law. We are required to make a $3.3 million contribution to the hourly pension plan in fiscal 2011, all of which will be funded through a pre-funded balance. Benefits under the majority of plans for hourly employees (including multiemployer plans) are primarily related to years of service.
Net periodic pension cost for our pension plans included the following (in thousands):
                 
    Second Quarter  
    Period from April 3,     Period from April 4,  
    2011 to July 2, 2011     2010 to July 3, 2010  
 
               
Service cost
  $ 523     $ 498  
Interest cost on projected benefit obligation
    1,152       1,186  
Expected return on plan assets
    (1,376 )     (1,232 )
Amortization of unrecognized loss
    145       123  
 
           
Net periodic pension cost
  $ 444     $ 575  
 
           
                 
    Six Months Ended  
    Period from January 2,     Period from January 3,  
    2011 to July 2, 2011     2010 to July 3, 2010  
 
               
Service cost
  $ 1,046     $ 996  
Interest cost on projected benefit obligation
    2,304       2,372  
Expected return on plan assets
    (2,753 )     (2,464 )
Amortization of unrecognized loss
    290       246  
 
           
Net periodic pension cost
  $ 887     $ 1,150