Shareholders' Equity Shareholders' Equity - Stock Option Awards - Outstanding Stock Options (Details) - USD ($) $ / shares in Units, shares in Thousands	9 Months Ended
	Oct. 29, 2016	Jan. 30, 2016
2011 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	2,485	1,555
Options outstanding, weighted average exercise price	$ 2.25	$ 4.30
Options outstanding, weighted average remaining contractual term	8 years 8 months 5 days
Options outstanding, aggregate intrinsic value	$ 1,421,000
Vested or expected to vest, outstanding	2,323
Vested or expected to vest, outstanding, weighted average exercise price	$ 2.31
Vested or expected to vest, outstanding, weighted average remaining contractual term	8 years 7 months 11 days
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 1,287,000
2004 Omnibus Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	302	670
Options outstanding, weighted average exercise price	$ 5.41	$ 6.18
Options outstanding, weighted average remaining contractual term	3 years 5 months 29 days
Options outstanding, aggregate intrinsic value	$ 7,300
Vested or expected to vest, outstanding	302
Vested or expected to vest, outstanding, weighted average exercise price	$ 5.41
Vested or expected to vest, outstanding, weighted average remaining contractual term	3 years 5 months 24 days
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 7,300
2001 Omnibus Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	97	399
Options outstanding, weighted average exercise price	$ 9.31	$ 7.78
Options outstanding, weighted average remaining contractual term	11 months 8 days
Options outstanding, aggregate intrinsic value	$ 0
Vested or expected to vest, outstanding	97
Vested or expected to vest, outstanding, weighted average exercise price	$ 9.31
Vested or expected to vest, outstanding, weighted average remaining contractual term	11 months 8 days
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 0