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Fair Value of Financial Instruments (Tables)
3 Months Ended
Jul. 29, 2012
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 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:
                       
Low Duration Bond Fund
  $ 2,051       N/A       N/A     $ 2,051  
Limited Term Bond Fund
    2,063       N/A       N/A       2,063  
Intermediate Term Bond Fund
    1,086       N/A       N/A       1,086  


   
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:
                       
Low Duration Bond Fund
  $ 2,049       N/A       N/A     $ 2,049  
Limited Term Bond Fund
    2,037       N/A       N/A       2,037  
Intermediate Term Bond Fund
    1,058       N/A       N/A       1,058