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Fair Value Measurements (Tables)
 12 Months Ended
Apr. 26, 2014
Fair Value Measurements [Abstract]  
Schedule of assets measured at fair value on recurring basis
The following table presents the fair value hierarchy for those assets measured at fair value on a recurring basis as of April 26, 2014, and April 27, 2013:
 
Fiscal 2014
 
Fair Value Measurements
 
(Amounts in thousands)
 
Level 1 (a)
  
Level 2 (a)
  
Level 3
 
Assets
 
  
  
 
Available-for-sale securities
 
$
1,521
  
$
57,630
  
$
—
 
Trading securities
  
—
   
1,787
   
—
 
Total
 
$
1,521
  
$
59,417
  
$
—
 

(a)There were no transfers between Level 1 and Level 2 during fiscal 2014.

Fiscal 2013
 
Fair Value Measurements
 
(Amounts in thousands)
 
Level 1 (b)
  
Level 2 (b)
  
Level 3
 
Assets
 
  
  
 
Available-for-sale securities
 
$
1,217
  
$
38,747
  
$
—
 
Trading securities
  
—
   
1,126
   
—
 
Total
 
$
1,217
  
$
39,873
  
$
—
 

(b)There were no transfers between Level 1 and Level 2 during fiscal 2013.