Accounting For Share-Based Payments - Warrants (Details) - Warrant [Member] $ / shares in Units, $ in Thousands	9 Months Ended
	Oct. 31, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at beginning of period (number of warrants) | shares	6,299,971
Granted (number of warrants) | shares	0
Exercised (number of warrants) | shares	0
Forfeited (number of warrants) | shares	0
Outstanding at beginning of period (number of warrants) | shares	6,299,971
Vested at end of period (number of warrants) | shares	6,299,971
Exercisable at end of period (number of warrants) | shares	6,299,971
Outstanding at beginning of period (weighted average exercise price) | $ / shares	$ 11.80
Granted (weighted average exercise price) | $ / shares	0.00
Exercised (number of warrants) | $ / shares	0.00
Forfeited (number of warrants) | $ / shares	0.00
Outstanding at end of period (weighted average exercise price) | $ / shares	11.80
Vested at end of period (number of warrants) | $ / shares	11.80
Exercisable at end of period (number of warrants) | $ / shares	$ 11.80
Outstanding at end of period (weighted average remaining contractual life)	2 years 7 months 6 days
Vested at end of period (weighted average remaining contractual life)	2 years 7 months 6 days
Exercisable at end of period (weighted average remaining contractual life)	2 years 7 months 6 days
Outstanding at end of period (aggregate intrinsic value) | $	$ 0
Vested at end of period (aggregate intrinsic value) | $	0
Exercisable at end of period (aggregate intrinsic value) | $	$ 0