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Fair Value of Financial Instruments (Tables)
 12 Months Ended
Apr. 28, 2013
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table presents information about assets and liabilities measured at fair value on a recurring basis:

   
Fair value measurements at April 28, 2013 using:
  
       
   
Quoted prices in
 active markets
 for identical
 assets
    
Significant other
 observable inputs
    
Significant
 unobservable
 inputs
        
                         
(amounts in thousands) 
  
Level 1
    
Level 2
    
Level 3
    
Total
  
                         
Assets:
                        
Limited Term Bond Fund
   $ 2,092       N/A       N/A     $ 2,092  
Low Duration Bond Fund
     2,076       N/A       N/A       2,076  
Intermediate Term Bond Fund
     1,118       N/A       N/A       1,118  
 

   
Fair value measurements at April 29, 2012 using:
  
       
   
Quoted prices in
 active markets
 for identical
 assets
    
Significant other
 observable inputs
    
Significant
 unobservable
 inputs
        
                         
(amounts in thousands) 
  
Level 1
    
Level 2
    
Level 3
    
Total
  
                         
Assets:
                        
Limited Term Bond Fund
   $ 2,049       N/A       N/A     $ 2,049  
Low Duration Bond Fund
     2,037       N/A       N/A       2,037  
Intermediate Bond Fund
     1,058       N/A       N/A       1,058