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Fair Value (Tables)
6 Months Ended
Jun. 25, 2011
Fair Value  
Summary of assets and liabilities measured at fair value on a recurring basis

 
  Fair Value Measurements at
June 25, 2011 using
 
 
  Quoted Prices in
Active Markets
for Identical
Assets
Level 1
  Significant
Other
Observable
Inputs
Level 2
  Significant
Unobservable
Inputs
Level 3
  Assets
at Fair Value
 

Time deposits

  $   $ 11,780   $   $ 11,780  

Auction rate securities

            11,239     11,239  

Fair value of life policies

        17,384         17,384  
                   

Total assets

  $   $ 29,164   $ 11,239   $ 40,403  
                   

Contingent consideration

            4,311     4,311  

Hedge contract

        3,092         3,092  
                   

Total liabilities

  $   $ 3,092   $ 4,311   $ 7,403  
                   

 

 
  Fair Value Measurements at
December 25, 2010 using
 
 
  Quoted Prices in
Active Markets
for Identical
Assets
Level 1
  Significant Other
Observable
Inputs
Level 2
  Significant
Unobservable
Inputs
Level 3
  Assets
at Fair Value
 

Time deposits

  $   $ 9,834   $   $ 9,834  

Auction rate securities

            11,377     11,377  

Fair value of life policies

        25,609         25,609  

Hedge contract

        419         419  
                   

Total assets

  $   $ 35,862   $ 11,377   $ 47,239  
                   

Contingent consideration

            5,365     5,365  
                   

Total liabilities

  $   $   $ 5,365   $ 5,365  
                   
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)

 
  Fair Value Measurements
Using Significant
Unobservable Inputs (Level 3)
 
 
  Six months ended  
Auction rate securities
  June 25, 2011   June 26, 2010  

Beginning balance

  $ 11,377   $ 16,212  

Transfers in and/or out of Level 3

         

Total gains or losses (realized/unrealized):

             
 

Included in earnings (other expenses)

    (1 )    
 

Included in other comprehensive income

    (137 )   333  

Purchases, issuances and settlements

         
           

Ending balance

  $ 11,239   $ 16,545  
           

 

 
  Fair Value Measurements
Using Significant
Unobservable Inputs (Level 3)
 
 
  Six months ended  
Contingent consideration
  June 25, 2011   June 26, 2010  

Beginning balance

  $ 5,365   $ 9,300  

Transfers in and/or out of Level 3

         

Total gains or losses (realized/unrealized):

             
 

Included in (earnings) other expenses

    (1,054 )   400  
 

Included in other comprehensive income

         

Purchases, issuances and settlements

         
           

Ending balance

  $ 4,311   $ 9,700