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Stock-Based Compensation (Tables)
3 Months Ended
Apr. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Restricted Stock Activity
Restricted stock award activity for the thirteen weeks ended April 30, 2016 was as follows:
 
Number of
Shares
 
Weighted
Average
Grant Date
Fair Value
Unvested, beginning of period
2,585,392

 
$
16.60

Granted
1,368,190

 
12.56

Vested
(779,905
)
 
17.19

Forfeited
(229,038
)
 
15.64

Unvested, end of period
2,944,639

 
14.64

Schedule of Performance-Based Restricted Stock Unit Activity
Performance-based restricted stock unit activity for the thirteen weeks ended April 30, 2016 was as follows:
 
Number of
Shares
 
Weighted
Average
Grant Date
Fair Value
Unvested, beginning of period
469,898

 
$
18.23

Granted
733,360

 
12.55

Vested
(214,465
)
 
18.23

Forfeited (1)
(183,608
)
 
16.51

Unvested, end of period
805,185

 
13.45


(1) The performance goal for the PSUs granted in 2015 was not fully met. Forfeitures for the thirteen weeks ended April 30, 2016 include the portion of the fiscal 2015 PSUs that were not earned.
Summary of Stock Option Activity
Stock option activity for the thirteen weeks ended April 30, 2016 was as follows:
 
Number of
Shares
 
Weighted
 Average
Exercise Price
Outstanding, beginning of period
1,060,774

 
$
15.17

Granted

 

Exercised
(6,600
)
 
8.24

Forfeited or expired
(59,000
)
 
27.78

Outstanding and exercisable at April 30, 2016
995,174

 
14.47