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Fair Value Measurements (Tables)
 3 Months Ended
Apr. 03, 2021
Fair Value Measurements [Abstract]  
Fair Value of Assets and Liabilities Carried at Fair Value Measured on Recurring Basis
The following table provides the financial assets and liabilities carried at fair value measured on a recurring basis:

  
Total
Fair Value
    
Level 1
    
Level 2
    
Level 3
  
April 3, 2021
                        
Assets:
                        
Assets held in rabbi trusts
  
$
56,143
    
$
31,352
    
$
24,791
    
$
-
  
Available for sale securities
  
$
4,641
      
4,641
      
-
      
-
  
   
$
60,784
    
$
35,993
    
$
24,791
    
$
-
  
December 31, 2020
                                
Assets:
                                
Assets held in rabbi trusts
  
$
57,892
    
$
34,145
      
23,747
    
$
-
  
Available for sale securities
  
$
4,917
      
4,917
      
-
      
-
  
   
$
62,809
    
$
39,062
    
$
23,747
    
$
-