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Fair Value of Financial Instruments (Tables)
 3 Months Ended
Jul. 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 July 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:
                  
Low Duration Bond Fund
 $ 
 2,050
 
    N/A
 
  N/A
   $
2,050
Limited Term Bond Fund
  
 2,545
  
    N/A
  
  N/A
    
2,545
Intermediate Term Bond Fund
  
 1,579
  
    N/A
  
  N/A
    
1,579


   
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

Schedule of Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
 
Fair value measurements at July 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:
                  
Equipment
 $ -   $ 890   $ -     $ 890  
Non-compete Agreement
   -     -     882       882  
Customer Relationships
   -     -     868       868