Shareholders' Equity - Stock Option Awards - Outstanding Stock Options (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Oct. 28, 2017	Jan. 28, 2017
2011 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	3,482	2,543
Options outstanding, weighted average exercise price	$ 1.64	$ 2.19
Options outstanding, weighted average remaining contractual term	8 years 7 months 28 days
Options outstanding, aggregate intrinsic value	$ 31
Vested or expected to vest, outstanding	3,119
Vested or expected to vest, outstanding, weighted average exercise price	$ 1.68
Vested or expected to vest, outstanding, weighted average remaining contractual term	8 years 3 months 22 days
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 29
2004 Omnibus Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	287	301
Options outstanding, weighted average exercise price	$ 5.44	$ 5.41
Options outstanding, weighted average remaining contractual term	2 years 5 months 13 days
Options outstanding, aggregate intrinsic value	$ 0
Vested or expected to vest, outstanding	287
Vested or expected to vest, outstanding, weighted average exercise price	$ 5.44
Vested or expected to vest, outstanding, weighted average remaining contractual term	2 years 5 months 13 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	0	77
Options outstanding, weighted average exercise price	$ 0.00	$ 10.73
Options outstanding, weighted average remaining contractual term	0 years
Options outstanding, aggregate intrinsic value	$ 0
Vested or expected to vest, outstanding	0
Vested or expected to vest, outstanding, weighted average exercise price	$ 0.00
Vested or expected to vest, outstanding, weighted average remaining contractual term	0 years
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 0