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Stockholders' Equity - Stock Options And Related Valuation Assumptions (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 02, 2019
Feb. 03, 2018
Jul. 16, 2016
Stock Options      
Stock-Based Compensation      
Vesting period 3 years    
Stock-based compensation expense recognized (in dollars) $ 0.9 $ 1.2  
Assumptions      
Expected Volatility, Minimum (as a percent) 67.80% 39.80%  
Expected Volatility, Maximum (as a percent) 84.50% 58.90%  
Risk-Free Interest Rate, Minimum (as a percent) 2.40% 1.90%  
Risk-Free Interest Rate, Maximum (as a percent) 2.60% 2.30%  
Estimated Forfeiture Rate (as a percent) 10.00% 10.00%  
Stock Options | Minimum      
Stock-Based Compensation      
Expiration period 7 years    
Assumptions      
Expected life (in years) 3 years 4 years 9 months 18 days  
Stock Options | Maximum      
Stock-Based Compensation      
Expiration period 10 years    
Assumptions      
Expected life (in years) 3 years 8 months 12 days 4 years 10 months 24 days  
2013 Plan      
Stock-Based Compensation      
Number of shares of common stock authorized that were previously reserved but unissued under 2006 Plan     1,200,000
Future grants of common stock authorized     472,487