Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Jan. 31, 2017
Class of Stock [Line Items]
Deferred professional costs	$ 423,000		$ 500,000
Accumulated amortization of deferred costs	241,000		370,000
Amortization expense	83,000	$ 43,000
Severance expenses	55,000	117,000
Accrued severances	37,000		9,000
Share-based compensation expense	267,174	477,212
Cost of shares for tax withholding	28,927	$ 11,702
Reserves for uncertain tax positions and corresponding interest and penalties	$ 263,000		$ 263,000
Restricted Stock
Class of Stock [Line Items]
Antidilutive securities (in shares)	316,158	301,460
Stock Option
Class of Stock [Line Items]
Antidilutive securities (in shares)	2,292,187	2,372,827
Warrant
Class of Stock [Line Items]
Antidilutive securities (in shares)	1,400,000	1,400,000
Series A Preferred Stock
Class of Stock [Line Items]
Convertible redeemable preferred stock, shares outstanding (in shares)	2,949,995		2,949,995
Number of common shares for each convertible preferred share (in shares)	1
Restricted Stock
Class of Stock [Line Items]
Service period (in years)	1 year
Shares surrendered for tax withholding (in shares)	21,269
Cost of shares for tax withholding	$ 29,000