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Fair Value of Financial Instruments (Tables)
6 Months Ended
Oct. 29, 2017
Fair Value Disclosures [Abstract]  
Schedule of Assets Measured at Fair Value on a Recurring Basis
The following table presents information about assets measured at fair value on a recurring basis:

 
 
Fair value measurements at October 29, 2017 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:
                       
U.S. Corporate Bonds
 
$
-
   
$
30,773
   
$
-
   
$
30,773
 
Premier Money Market Fund
   
6,153
     
N/A
     
N/A
     
6,153
 
Low Duration Bond Fund
   
1,087
     
N/A
     
N/A
     
1,087
 
Intermediate Term Bond Fund
   
765
     
N/A
     
N/A
     
765
 
Strategic Income Fund
   
626
     
N/A
     
N/A
     
626
 
Large Blend Fund
   
393
     
N/A
     
N/A
     
393
 
Growth Allocation Fund
   
153
     
N/A
     
N/A
     
153
 
Moderate Allocation Fund
   
107
     
N/A
     
N/A
     
107
 
Other
   
115
     
N/A
     
N/A
     
115
 
 

   
Fair value measurements at October 30, 2016 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:
                       
Cash and Cash Equivalents
 
$
23,940
     
N/A
     
N/A
   
$
23,940
 
U.S. Corporate Bonds
   
-
     
7,110
     
N/A
     
7,110
 
Premier Money Market Fund
   
4,421
     
N/A
     
N/A
     
4,421
 
Low Duration Bond Fund
   
1,075
     
N/A
     
N/A
     
1,075
 
Intermediate Term Bond Fund
   
750
     
N/A
     
N/A
     
750
 
Strategic Income Fund
   
605
     
N/A
     
N/A
     
605
 
Large Blend Fund
   
319
     
N/A
     
N/A
     
319
 
Growth Allocation Fund
   
102
     
N/A
     
N/A
     
102
 
Other
   
152
     
N/A
     
N/A
     
152
 
 
 
   
Fair value measurements at April 30, 2017 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:
                       
U.S. Corporate Bonds
 
$
-
   
$
30,831
   
$
-
   
$
30,831
 
Premier Money Market Fund
   
4,811
     
N/A
     
N/A
     
4,811
 
Low Duration Bond Fund
   
1,081
     
N/A
     
N/A
     
1,081
 
Intermediate Term Bond Fund
   
751
     
N/A
     
N/A
     
751
 
Strategic Income Fund
   
611
     
N/A
     
N/A
     
611
 
Large Blend Fund
   
365
     
N/A
     
N/A
     
365
 
Growth Allocation Fund
   
126
     
N/A
     
N/A
     
126
 
Moderate Allocation Fund
   
88
     
N/A
     
N/A
     
88
 
Other
   
76
     
N/A
     
N/A
     
76