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Stock-Based Compensation (Tables)
 3 Months Ended
Oct. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Assumptions Used
Assumptions used in the Monte-Carlo model are presented below:
  
 
Three Months Ended 
 October 31,
 
2014
 
2013
Expected term, in years
2.81
 
N/A
Expected volatility
52.76%
 
N/A
Risk-free interest rate
0.89%
 
N/A
Dividend rate
0.00%
 
N/A
For the three months ended October 31, 2013, assumptions used in the Black-Scholes model are presented below:
 
Three Months Ended 
 October 31,
 
2014
 
2013
Average expected life, in years
N/A
 
6
Expected volatility
N/A
 
55.84%
Risk-free interest rate
N/A
 
1.7%
Dividend rate
N/A
 
0.00%
Summary of Stock Option Activity
The following table summarizes option activity during the three months ended October 31, 2014: 
 
Number of
Shares
(in thousands)
 
Weighted
average exercise
price per share
 
Weighted average
remaining
contractual life
(in years)
 
Aggregate
intrinsic value
(in thousands)
Outstanding at July 31, 2014
1,496

 
$
24.79

 
 
 
 
Granted
—

 
—

 
 
 
 
Exercised
(9
)
 
13.34

 
 
 
 
Cancelled/Forfeited
(34
)
 
29.96

 
 
 
 
Outstanding at October 31, 2014
1,453

 
24.75

 
6.8
 
$
14,511

Exercisable at October 31, 2014
918

 
26.85

 
5.8
 
$
8,574
Nonvested Stock Option Activity
The following table summarizes nonvested stock option activity during the three ended October 31, 2014: 
 
Number of
shares
(in thousands)
 
Weighted
average grant
date fair value
per share
Nonvested at July 31, 2014
660

 
$
10.81

Granted
—

 
—

Vested
(93
)
 
11.21

Cancelled/Forfeited
(32
)
 
13.24

Nonvested at October 31, 2014
535

 
10.59
Restricted Stock and Restricted Stock Units Activity
Restricted Stock and Restricted Stock Unit Awards: Restricted stock and restricted stock unit activity during the three months ended October 31, 2014: 
 
Restricted Stock
 
Restricted Stock Units
 
Number of
shares
(in thousands)
 
Weighted average
grant date fair
value per share
 
Number of
shares
(in thousands)
 
Weighted average
grant date fair
value per share
Outstanding at July 31, 2014
366

 
$
20.47

 
310

 
$
19.72

Granted
—

 
—

 
201

 
28.77

Vested
(36
)
 
33.05

 
(41
)
 
23.15

Cancelled/Forfeited
(20
)
 
20.38

 
(22
)
 
20.26

Outstanding at October 31, 2014
310

 
19.01

 
448

 
23.44
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest
Performance share award activity during the three months ended October 31, 2014:
 
Number of
Shares
(in thousands)
 
Weighted
average grant date fair value
 
Weighted average
remaining
contractual life
(in years)
 
Aggregate
intrinsic value
(in thousands)
Outstanding at July 31, 2014
—

 
$
—

 
 
 
 
Granted
123

 
32.44

 
 
 
 
Vested
—

 
—

 
 
 
 
Cancelled/Forfeited
(3
)
 
32.44

 
 
 
 
Outstanding at October 31, 2014
120

 
32.44

 
2.9
 
$
3,623