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Summary of Significant Accounting Policies - Performance Stock Units And Restricted Stock Units (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 30, 2016
Aug. 01, 2015
Jul. 30, 2016
Aug. 01, 2015
Apr. 05, 2016
Stock-Based Compensation          
Closing share price (in dollars per share)         $ 16.89
Compensation expense (in dollars) $ 254 $ 276 $ 550 $ 455  
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) $ 18.58   $ 18.58    
Target share price for fiscal year 2015 (in dollars per share) 20.44   20.44    
Target share price for fiscal year ending in 2016 (in dollars per share) $ 22.48   $ 22.48    
Award vesting percentage     33.33%    
Restricted Stock and Performance Stock Units          
Stock-Based Compensation          
Compensation expense (in dollars) $ 363 $ 334 $ 703 $ 488  
Number of Shares          
Unvested stock at the beginning of the period (in shares)     196,500    
Granted (in shares)     19,500    
Vested (in shares)     (63,831)    
Forfeited (in shares)     (5,000)    
Unvested stock at the end of the period (in shares) 147,169   147,169    
Weighted Average Grant-Date Fair Value          
Unvested stock at the beginning of the period (in dollars per share)     $ 21.67    
Granted (in dollars per share)     10.31    
Vested (in dollars per share)     21.25    
Forfeited (in dollars per share)     17.81    
Unvested stock at the end of the period (in dollars per share) $ 20.48   $ 20.48    
Unrecognized stock-based compensation          
Unrecognized stock-based compensation expense (in dollars) $ 2,618   $ 2,618    
Weighted average period for recognition of unrecognized stock-based compensation expense     1 year 10 months 10 days