Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Jan. 31, 2016
Class of Stock [Line Items]
Deferred professional costs	$ 552,000		$ 571,000
Accumulated amortization of deferred costs	309,000		265,000
Amortization expense	43,000	$ 42,000
Severance expenses	117,000	6,000
Accrued severances	95,000		26,000
Share-based compensation expense	477,212	651,982
Cost of shares for tax withholding	11,702	$ 0
Reserves for uncertain tax positions and corresponding interest and penalties	0		0
Deferred finance costs	0		$ 270,147
Accumulated amortization of deferred financing costs	$ 102,000
Stock Option
Class of Stock [Line Items]
Antidilutive securities (in shares)	2,372,827	2,641,536
Warrant
Class of Stock [Line Items]
Antidilutive securities (in shares)	1,400,000	1,400,000
Restricted Stock
Class of Stock [Line Items]
Antidilutive securities (in shares)	688,495	59,307
Series A Preferred Stock
Class of Stock [Line Items]
Convertible redeemable preferred stock, shares outstanding (in shares)	2,949,995		2,949,995
Restricted Stock
Class of Stock [Line Items]
Service period (in years)	1 year
Shares surrendered for tax withholding (in shares)	8,241
Cost of shares for tax withholding	$ 12,000
Senior Notes | Credit Agreement
Class of Stock [Line Items]
Deferred finance costs	$ 252,000