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 9 Months Ended
Nov. 03, 2018
USD ($)
shares
Oct. 28, 2017
USD ($)
Nov. 03, 2018
USD ($)
$ / shares
shares
Oct. 28, 2017
USD ($)
$ / shares
Aug. 04, 2018
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock option awards compensation expense $ 315 $ 247 $ 857 $ 670  
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     $ 26 $ 10  
Unrecognized compensation cost related to non-vested awards         $ 0
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 $ 1,834   $ 1,834    
Period for recognition of unrecognized compensation cost     1 year 11 months 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