Share-Based Compensation (Tables)
 9 Months Ended
Oct. 28, 2017
Share-based Compensation [Abstract]  
Schedule of Shared-based Compensation Expense
The following summarizes share-based compensation expense:
 
Thirteen Weeks Ended
 
Thirty-Nine Weeks Ended
 
October 28, 2017
 
October 29, 2016
 
October 28, 2017
 
October 29, 2016
 
(in thousands)
Restricted stock units
$
3,249

 
$
2,701

 
$
9,455

 
$
8,701

Stock options
401

 
502

 
1,655

 
2,082

Total share-based compensation
$
3,650

 
$
3,203

 
$
11,110

 
$
10,783
Schedule of Activity related to Stock Options
The Company's activity with respect to stock options during the thirty-nine weeks ended October 28, 2017 was as follows:
 
Number of
Shares 
 
Grant Date
Weighted Average
Exercise Price Per Share
 
Weighted-Average Remaining Contractual Life (in years)
 
Aggregate Intrinsic Value
 
(in thousands, except per share amounts and years)
Outstanding, January 28, 2017
2,329

 
$
18.18

 
 
 
 
Granted
493

 
$
9.42

 
 
 
 
Exercised
—

 
$
—

 
 
 
 
Forfeited or expired
(220
)
 
$
18.35

 
 
 
 
Outstanding, October 28, 2017
2,602

 
$
16.51

 
5.8
 
$
—

Expected to vest at October 28, 2017
751

 
$
13.10

 
8.8
 
$
—

Exercisable at October 28, 2017
1,808

 
$
18.04

 
4.5
 
$
—
Supplemental Options Options Information
The following table provides additional information regarding the Company's stock options:
 
Thirty-Nine Weeks Ended
 
October 28, 2017

October 29, 2016
 
(in thousands, except per share amounts)
Weighted average grant date fair value of options granted (per share)
$
4.39

 
$
9.50

Total intrinsic value of options exercised
$
—

 
$
547
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The fair value of stock options was estimated at the grant date using the Black-Scholes-Merton option pricing model with the following weighted-average assumptions:
 
Thirty-Nine Weeks Ended
 
October 28, 2017
 
October 29, 2016
Risk-free interest rate (1)
2.27
%
 
1.60
%
Price volatility (2)
45.53
%
 
43.15
%
Expected term (years) (3)
6.10

 
6.54

Dividend yield (4)
—

 
—


(1)
Represents the yield on U.S. Treasury securities with a term consistent with the expected term of the stock options.
(2)
Primarily based on the historical volatility of the Company's common stock over a period consistent with the expected term of the stock options.
(3)
Calculated using the midpoint scenario, which combines historical exercise data with hypothetical exercise data for outstanding options. The Company believes this data currently represents the best estimate of the expected term of granted employee stock options.
(4)
The Company does not currently plan on paying regular dividends.
Schedule Activity related to Restricted Stock Units, Including Awards with Performance Conditions
The Company's activity with respect to RSUs, including awards with performance conditions, for the thirty-nine weeks ended October 28, 2017 was as follows:
 
Number of
Shares 
Grant Date
Weighted Average
Fair Value Per Share
 
(in thousands, except per share amounts)
Unvested, January 28, 2017
1,683

$
17.64

Granted (1)
2,122

$
9.22

Performance Shares Adjustment (2)
(25
)
$
—

Vested
(574
)
$
17.26

Forfeited
(161
)
$
12.85

Unvested, October 28, 2017
3,045

$
12.11


(1)
Approximately 0.8 million RSUs with three-year performance conditions were granted in the first quarter of 2017. One hundred percent of these RSUs are currently included as granted in the table above. The number of performance-based RSUs that are ultimately earned may vary from 0% to 200% of target depending on the achievement of predefined financial performance targets.
(2)
Relates to a change in estimate of RSUs with performance conditions granted in 2015. Currently, 80% of the number of shares granted in 2015 are expected to vest based on estimates against predefined financial performance targets.