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Shareholders' Equity (Tables)
 3 Months Ended
Oct. 29, 2016
Shareholders' Equity [Abstract]  
Components of Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss are summarized in the following table.

  
Balance at
 
  
October 29, 2016
  
July 31, 2016
 
  
(in thousands)
 
       
Unrealized net foreign currency translation losses
 
$
(2,168
)
 
$
(2,176
)
Unrealized net investment gains on available for sale investments
  
22
   
33
 
Total accumulated other comprehensive loss
 
$
(2,146
)
 
$
(2,143
)