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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Apr. 29, 2017
Apr. 30, 2016
Jan. 28, 2017
Jan. 30, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-based compensation $ 650 $ 625    
Nonvested Restricted Stock Awards        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Issuance of nonvested stock units   162,000    
Nonvested stock issued, weighted average grant date fair value per share   $ 11.25    
Vesting period   3 years    
Vesting percentage   0.33%    
Nonvested stock units outstanding, weighted average grant date fair value per share $ 11.25 $ 11.25 $ 11.25  
Nonvested Performance-Based Stock Awards        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Issuance of nonvested stock units   159    
Nonvested stock issued, weighted average grant date fair value per share   $ 11.25    
Nonvested stock units outstanding, weighted average grant date fair value per share $ 11.25   $ 11.25  
Target number of shares subject to award     73  
Restricted Stock Units (RSUs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Issuance of nonvested stock units 172,000 0    
Nonvested stock issued, weighted average grant date fair value per share $ 4.62      
Nonvested stock units outstanding, weighted average grant date fair value per share $ 4.74 $ 7.14 $ 7.17 $ 7.15
Employee Stock Plans        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Shares issued under ESPP 0      
Employee Stock Plans | 2013 Plan        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of shares available for awards 1,475,000      
Number of awards outstanding 410,000      
Employee Stock Purchase Plan        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Maximum number of shares subject to award       800,000
Selling, General and Administrative Expenses        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-based compensation $ 650 $ 625    
Net tax benefit related to stock-based compensation expense $ 253 $ 233