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Capitalization (Details 4) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Feb. 01, 2013
Stock-Based Compensation        
Closing share price (in dollars per share)       $ 13.95
Performance-Based Equity Awards        
Stock-Based Compensation        
Target growth rate (as a percent) 10.00%      
Target share price for fiscal year 2014 (in dollars per share) $ 15.35      
Target share price for fiscal year 2015 (in dollars per share) 16.88      
Target share price for fiscal year ending in 2016 (in dollars per share) $ 18.57      
Award vesting percentage 33.00%      
Percentage vested during the period   67.00%    
Restricted Stock and Performance Stock Units        
Stock-Based Compensation        
Compensation expense (in dollars) $ 1,100 $ 400 $ 200  
Number of Shares        
Unvested stock at the beginning of the period (in shares) 76,936 87,000 7,500  
Granted (in shares) 166,000 51,576 79,500  
Vested (in shares) (27,435) (44,640)    
Forfeited (in shares) (19,001) (17,000)    
Unvested stock at the end of the period (in shares) 196,500 76,936 87,000  
Weighted Average Grant-Date Fair Value        
Unvested stock at the beginning of the period (in dollars per share) $ 13.02 $ 5.70 $ 13.27  
Granted (in dollars per share) 22.71 17.22 4.99  
Vested (in dollars per share) 15.74 5.55    
Forfeited (in dollars per share) 4.27 7.92    
Unvested stock at the end of the period (in dollars per share) $ 21.67 $ 13.02 $ 5.70  
Unrecognized stock-based compensation        
Unrecognized stock-based compensation expense (in dollars) $ 3,100      
Weighted average period for recognition of unrecognized stock-based compensation expense 2 years 4 months 10 days