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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Aug. 03, 2019
Aug. 04, 2018
Aug. 03, 2019
Aug. 04, 2018
Feb. 02, 2019
Jan. 30, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Stock-based compensation     $ 948 $ 2,054    
Nonvested Restricted Stock Awards            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Vested, Shares     26 80    
Nonvested Performance-Based Stock Awards            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Issuance of nonvested stock units     289 163    
Nonvested stock issued, weighted average grant date fair value per share     $ 3.56 $ 4.91    
Vested, Shares     6 46    
Nonvested Stock Unit Awards            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Issuance of nonvested stock units     616 319    
Nonvested stock issued, weighted average grant date fair value per share     $ 4.06 $ 4.87    
Vested, Shares     211 264    
Employees | Nonvested Restricted Stock Awards            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Issuance of nonvested stock units 0 0 0 0    
Employees | Nonvested Performance-Based Stock Awards            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Maximum number of shares subject to award 578 326 578 326    
Issuance of nonvested stock units 289 163 289 163    
Nonvested stock issued, weighted average grant date fair value per share $ 3.53   $ 3.53 $ 4.91    
Nonvested stock awards vested over grant date   3 years   3 years    
Vesting percentage   33.00%   33.00%    
Employees | Nonvested Performance-Based Stock Awards | Minimum threshold performance target not achieved            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Vested, Shares     0   0  
Employees And Board Of Directors | Nonvested Stock Unit Awards            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Issuance of nonvested stock units 459 69 616 319    
Nonvested stock issued, weighted average grant date fair value per share   $ 5.22 $ 4.06 $ 4.87    
Nonvested stock awards vested over grant date     3 years      
Vesting percentage 33.00%   33.00%      
Employee Stock Purchase Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Number of shares available for awards 512   512      
Maximum number of shares subject to award           800
Shares issued under ESPP 54          
2019 Plan | Employee Stock Plans            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Number of shares available for awards 3,067   3,067      
Number of awards outstanding 1,113   1,113      
Selling, General and Administrative Expenses            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Stock-based compensation $ 494 $ 482 $ 948 $ 2,054