Shareholders' Equity - Stock Option Awards - Outstanding Stock Options (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 29, 2017	Jan. 28, 2017
2011 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	3,556	2,543
Options outstanding, weighted average exercise price	$ 1.80	$ 2.19
Options outstanding, weighted average remaining contractual term	8 years 10 months 28 days
Options outstanding, aggregate intrinsic value	$ 280
Vested or expected to vest, outstanding	3,290
Vested or expected to vest, outstanding, weighted average exercise price	$ 1.83
Vested or expected to vest, outstanding, weighted average remaining contractual term	8 years 10 months 11 days
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 258
2004 Omnibus Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	294	301
Options outstanding, weighted average exercise price	$ 5.42	$ 5.41
Options outstanding, weighted average remaining contractual term	2 years 11 months 18 days
Options outstanding, aggregate intrinsic value	$ 0
Vested or expected to vest, outstanding	294
Vested or expected to vest, outstanding, weighted average exercise price	$ 5.42
Vested or expected to vest, outstanding, weighted average remaining contractual term	2 years 11 months 14 days
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 0
2001 Omnibus Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	74	77
Options outstanding, weighted average exercise price	$ 10.74	$ 10.73
Options outstanding, weighted average remaining contractual term	1 month 3 days
Options outstanding, aggregate intrinsic value	$ 0
Vested or expected to vest, outstanding	74
Vested or expected to vest, outstanding, weighted average exercise price	$ 10.74
Vested or expected to vest, outstanding, weighted average remaining contractual term	1 month 3 days
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 0