Share-Based Compensation (Tables)
 6 Months Ended
Jul. 29, 2017
Share-based Compensation [Abstract]  
Schedule of Shared-based Compensation Expense
The following summarizes share-based compensation expense:
 
Thirteen Weeks Ended
 
Twenty-Six Weeks Ended
 
July 29, 2017
 
July 30, 2016
 
July 29, 2017
 
July 30, 2016
 
(in thousands)
Restricted stock units
$
3,051

 
$
2,695

 
$
6,206

 
$
6,000

Stock options
391

 
517

 
1,254

 
1,580

Total share-based compensation
$
3,442

 
$
3,212

 
$
7,460

 
$
7,580
Schedule of Activity related to Stock Options
The Company's activity with respect to stock options during the twenty-six weeks ended July 29, 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
(151
)
 
$
18.01

 
 
 
 
Outstanding, July 29, 2017
2,671

 
$
16.57

 
6.1
 
$
—

Expected to vest at July 29, 2017
745

 
$
13.20

 
9.0
 
$
—

Exercisable at July 29, 2017
1,871

 
$
18.07

 
4.8
 
$
—
Supplemental Options Options Information
The following table provides additional information regarding the Company's stock options:
 
Twenty-Six Weeks Ended
 
July 29, 2017

July 30, 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
$
—

 
$
536
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:
 
Twenty-Six Weeks Ended
 
July 29, 2017
 
July 30, 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 twenty-six weeks ended July 29, 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)
2,112

$
9.23

Performance Shares Adjustment (2)
(25
)
$
—

Vested
(569
)
$
17.22

Forfeited
(130
)
$
12.93

Unvested, July 29, 2017
3,071

$
12.15


(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.