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Shareholders' Equity - Market Based Restricted Stock (Details) - USD ($)
3 Months Ended
May 02, 2019
May 02, 2020
May 04, 2019
Market Based Stock Restricted Stock Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted, shares 68,000    
Fair Value Assumptions and Methodology [Abstract]      
Total grant date fair value $ 220,000    
Expected volatility rate 80.00%    
Weighted average expected life (in years) 2 years 11 months 1 day    
Risk-free interest rate 2.50%    
Tranche 1 (One year) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award Vesting Period 1 year    
Fair Value Assumptions and Methodology [Abstract]      
Total grant date fair value per share $ 3.66    
Weighted average expected life (in years) 1 year    
Tranche 2 ($20.00/share) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of consecutive trading days 20 days    
Average closing price for 20 consecutive trading days, Lower range limit for vesting $ 20.00    
Continuous employment requisite period 1 year    
Fair Value Assumptions and Methodology [Abstract]      
Total grant date fair value per share $ 3.19    
Weighted average expected life (in years) 3 years 3 months 8 days    
Tranche 3 ($40.00/share) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of consecutive trading days 20 days    
Average closing price for 20 consecutive trading days, Lower range limit for vesting $ 40.00    
Continuous employment requisite period 2 years    
Fair Value Assumptions and Methodology [Abstract]      
Total grant date fair value per share $ 2.85    
Weighted average expected life (in years) 4 years 6 months 10 days    
Market-Based Performance Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted, shares   0 77,000
Award Vesting Period   3 years 3 years
Fair Value Assumptions and Methodology [Abstract]      
Total grant date fair value     $ 393,000
Weighted average expected life (in years)     3 years
Market-Based Performance Units [Member] | Less than 33% [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of Units Vested   0.00% 0.00%
Market-Based Performance Units [Member] | Greater than 33% [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of Units Vested   50.00% 50.00%
Market-Based Performance Units [Member] | Greater than 50% [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of Units Vested   100.00% 100.00%
Market-Based Performance Units [Member] | Greater than 100% [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of Units Vested   150.00% 150.00%
Minimum [Member] | Market-Based Performance Units [Member]      
Fair Value Assumptions and Methodology [Abstract]      
Total grant date fair value per share     $ 5.14
Expected volatility rate     74.00%
Risk-free interest rate     2.30%