Share-Based Compensation - Performance-based Restricted Stock Units and Cash-Settled Awards (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
May 04, 2019
May 05, 2018
Performance Shares, Restricted Stock Units [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period   3 years
Granted (in shares) 0.5  
Grant date weighted average fair value, granted (in dollar per share) $ 7.54  
Performance Shares, Restricted Stock Units [Member] | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Target percentage of performance award which can be earned   0.00%
Performance Shares, Restricted Stock Units [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Target percentage of performance award which can be earned   200.00%
Cash-Settled Awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 3 years  
Unrecognized compensation costs $ 2.1  
Period for recognition 2 years 6 months  
Cash-Settled Awards [Member] | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Target percentage of performance award which can be earned 0.00%  
Cash-Settled Awards [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Target percentage of performance award which can be earned 200.00%