Outstanding Stock Options (Details) (USD $)	3 Months Ended
	May 02, 2015	Jan. 31, 2015
2011 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	2,171,000	2,463,000
Options outstanding, weighted average exercise price	$ 4.27	$ 4.09
Options outstanding, weighted average remaining contractual term	8 years 1 month 18 days
Options outstanding, aggregate intrinsic value	$ 3,550,000
Vested or expected to vest, outstanding	2,118,000
Vested or expected to vest, outstanding, weighted average exercise price	$ 4.31
Vested or expected to vest, outstanding, weighted average remaining contractual term	7 years 11 months 29 days
Vested or expected to vest, outstanding, aggregate intrinsic value	3,518,000
2004 Omnibus Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	1,073,000	1,206,000
Options outstanding, weighted average exercise price	$ 6.73	$ 6.71
Options outstanding, weighted average remaining contractual term	4 years 0 months 26 days
Options outstanding, aggregate intrinsic value	267,000
Vested or expected to vest, outstanding	1,071,000
Vested or expected to vest, outstanding, weighted average exercise price	$ 6.68
Vested or expected to vest, outstanding, weighted average remaining contractual term	4 years 0 months 21 days
Vested or expected to vest, outstanding, aggregate intrinsic value	263,000
2001 Omnibus Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	674,000	826,000
Options outstanding, weighted average exercise price	$ 7.41	$ 6.89
Options outstanding, weighted average remaining contractual term	3 years 1 month 5 days
Options outstanding, aggregate intrinsic value	43,000
Vested or expected to vest, outstanding	674,000
Vested or expected to vest, outstanding, weighted average exercise price	$ 7.41
Vested or expected to vest, outstanding, weighted average remaining contractual term	3 years 1 month 5 days
Vested or expected to vest, outstanding, aggregate intrinsic value	43,000
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	0	450,000
Options outstanding, weighted average exercise price	$ 0.00	$ 4.51
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, aggregate intrinsic value	$ 0