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Shareholders' Equity - Restricted Stock Awards (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 29, 2017
Apr. 29, 2017
Jul. 30, 2016
Apr. 30, 2016
Jul. 29, 2017
Jul. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense         $ 1,267 $ 635
Granted, shares         2,005,000  
Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense $ 526   $ 263   $ 844 380
Unrecognized compensation cost related to non-vested awards $ 2,788       $ 2,788  
Weighted average expected life         1 year 8 months 26 days  
Restricted stock vested in period, total fair value         $ 370 269
Restricted Stock - Time Based [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted, shares 318,360 317,219 60,916 188,991    
Aggregate market value of the restricted stock at the date of the award $ 395 $ 422 $ 78 $ 187 395 78
Award Vesting Period 3 years 3 years 3 years 3 years    
Annual Merit Process [Member] | Restricted Stock - Time Based [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted, shares   327,738        
Aggregate market value of the restricted stock at the date of the award   $ 446        
Award Vesting Period   1 year        
Board Member [Member] | Restricted Stock - Time Based [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted, shares 472,720 7,096 167,142      
Aggregate market value of the restricted stock at the date of the award $ 520 $ 9 $ 292   $ 520 $ 292
Award Vesting Period 12 months   12 months