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Product Warranties (Tables)
 9 Months Ended
Jan. 25, 2014
Product Warranties [Abstract]  
Reconciliation of changes in product warranty liability
A reconciliation of the changes in our product warranty liability for the nine months ended January 25, 2014, and January 26, 2013, is as follows:

 
 
Third Quarter Ended
  
Nine Months Ended
 
 (Unaudited, amounts in thousands)
 
1/25/14
  
1/26/13
  
1/25/14
  
1/26/13
 
Balance as of the beginning of the period
 
$
15,929
  
$
14,313
  
$
15,525
  
$
14,327
 
Accruals during the period
  
3,026
   
4,143
   
10,698
   
11,050
 
Reclass to discontinued operations
  
(218
)
  
—
   
(218
)
  
—
 
Settlements during the period
  
(3,615
)
  
(3,692
)
  
(10,883
)
  
(10,613
)
Balance as of the end of the period
 
$
15,122
  
$
14,764
  
$
15,122
  
$
14,764