Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Total	Common stock	Additional paid in capital	Accumulated deficit
Stockholders' equity, beginning balance (in shares) at Jan. 31, 2015		18,553,389
Stockholders' equity, beginning balance at Jan. 31, 2015	$ 19,001,788	$ 185,534	$ 78,390,424	$ (59,574,170)
Statement of Changes in stockholders' equity
Stock issued pursuant to Employee Stock Purchase Plan and exercise of stock options (in shares)		111,971
Stock issued pursuant to Employee Stock Purchase Plan and exercise of stock options	262,038	$ 1,120	260,918
Restricted stock issued (in shares)		118,180
Restricted stock issued	0	$ 1,182	(1,182)
Share-based compensation expense	2,386,489		2,386,489
Deemed dividends on Series A Preferred Stock	(1,336,072)		(1,336,072)
Net loss	(4,290,115)			(4,290,115)
Stockholders' equity, ending balance (in shares) at Jan. 31, 2016		18,783,540
Stockholders' equity, ending balance at Jan. 31, 2016	16,024,128	$ 187,836	79,700,577	(63,864,285)
Statement of Changes in stockholders' equity
Stock issued pursuant to Employee Stock Purchase Plan and exercise of stock options (in shares)		67,667.00
Stock issued pursuant to Employee Stock Purchase Plan and exercise of stock options	76,582	$ 676	75,906
Restricted stock issued (in shares)		858,225.00
Restricted stock issued		$ 8,582	(8,582)
Restricted stock forfeited (in shares)		(5,800.00)
Restricted stock forfeited		$ (58)	58
Surrender of stock upon vesting of restricted stock to satisfy tax withholding obligations (in shares)		(8,241.00)
Surrender of stock upon vesting of restricted stock to satisfy tax withholding obligations	(11,702)	$ (82)	(11,620)
Share-based compensation expense	1,787,367		1,787,367
Deemed dividends on Series A Preferred Stock	(875,935)		(875,935)
Net loss	(5,161,566)			(5,161,566)
Stockholders' equity, ending balance (in shares) at Jan. 31, 2017		19,695,391
Stockholders' equity, ending balance at Jan. 31, 2017	$ 11,838,874	$ 196,954	$ 80,667,771	$ (69,025,851)