Outstanding Stock Options (Details) - USD ($)	3 Months Ended
	Apr. 30, 2016	Jan. 30, 2016
2011 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	2,026,000	1,555,000
Options outstanding, weighted average exercise price	$ 2.72	$ 4.30
Options outstanding, weighted average remaining contractual term	8 years 7 months 6 days
Options outstanding, aggregate intrinsic value	$ 340,000
Vested or expected to vest, outstanding	1,926,000
Vested or expected to vest, outstanding, weighted average exercise price	$ 2.78
Vested or expected to vest, outstanding, weighted average remaining contractual term	8 years 6 months
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 306,000
2004 Omnibus Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	651,000	670,000
Options outstanding, weighted average exercise price	$ 6.10	$ 6.18
Options outstanding, weighted average remaining contractual term	2 years 11 months 30 days
Options outstanding, aggregate intrinsic value	$ 1,000
Vested or expected to vest, outstanding	649,000
Vested or expected to vest, outstanding, weighted average exercise price	$ 6.10
Vested or expected to vest, outstanding, weighted average remaining contractual term	3 years
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 1,000
2001 Omnibus Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	391,000	399,000
Options outstanding, weighted average exercise price	$ 7.73	$ 7.78
Options outstanding, weighted average remaining contractual term	1 year 11 months 28 days
Options outstanding, aggregate intrinsic value	$ 0
Vested or expected to vest, outstanding	391,000
Vested or expected to vest, outstanding, weighted average exercise price	$ 7.73
Vested or expected to vest, outstanding, weighted average remaining contractual term	1 year 11 months 28 days
Vested or expected to vest, outstanding, aggregate intrinsic value	$ 0