Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Stock Option Awards - Narrative (Details)

v3.10.0.1
Shareholders' Equity - Stock Option Awards - Narrative (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Aug. 04, 2018
USD ($)
shares
Jul. 29, 2017
USD ($)
Aug. 04, 2018
USD ($)
$ / shares
shares
Jul. 29, 2017
USD ($)
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option awards compensation expense $ 237 $ 220 $ 542 $ 423
Number of omnibus stock plans for which stock awards can be currently granted 1   1  
Granted, weighted average grant date fair value | $ / shares     $ 0.74 $ 0.91
Intrinsic value of options exercised     $ 23 $ 9
2011 Omnibus Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized | shares 13,000,000   13,000,000  
Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost related to non-vested awards $ 2,117   $ 2,117  
Period for recognition of unrecognized compensation cost     2 years 1 month 24 days  
Stock Options [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Purchase price of common stock, percent     100.00%  
Award Vesting Period     3 years  
Stock Options [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Grant term limit after the effective date of the respective plan's inception     10 years  
Exercise term limit from date of grant     10 years