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Stock-Based Awards (Tables)
 3 Months Ended
Oct. 27, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Stock-Based Compensation Expense and Related Tax Benefit Recognized
Stock-based compensation expense and the related tax benefit recognized related to stock options and restricted share units during the three months ended October 27, 2012 and October 29, 2011 were as follows:
 
For the Three Months Ended
 
October 27, 2012
 
October 29, 2011
 
 
(Dollars in thousands)
Stock-based compensation
$
2,266

 
$
1,326

 
Tax benefit recognized
$
(765
)
 
$
(372
)
 
Schedule of Share-based Compensation, Stock Optiona Award Activity
The following table summarizes stock option award activity during the three months ended October 27, 2012:
 
 
Stock Options
 
Shares
 
Weighted Average Exercise Price
 
 
 
 
Outstanding as of July 28, 2012
3,298,747

 
$
17.08

Granted
—

 
$
—

Options exercised
(21,230
)
 
$
7.81

Forfeited or cancelled
(98,095
)
 
$
24.65

Outstanding as of October 27, 2012
3,179,422

 
$
16.91

 
 
 
 
Exercisable options as of October 27, 2012
1,787,886

 
$
20.84
Schedule of Share-based Compensation, RSU and Performance RSU Activity
The following table summarizes RSU and Performance RSU activity during the three months ended October 27, 2012:

 
Restricted Stock
 
RSUs
Performance RSUs
 
Share Units
 
Weighted Average Grant Price
 
Share Units
 
Weighted Average Grant Price
 
 
 
 
 
 
 
 
 
 
Outstanding as of July 28, 2012
222,760

 
$
14.49

 
774,264

 
$
18.76

 
Granted
1,280

 
$
17.80

 
101,568

 
$
13.85

 
Share units vested
(1,280
)
 
$
17.80

 
(36,341
)
 
$
14.53

 
Forfeited or cancelled
(3,000
)
 
$
7.98

 
(44,011
)
 
$
15.41

 
Outstanding as of October 27, 2012
219,760

 
$
14.58

 
795,480

 
$
18.51