Income Taxes - Tax Provision at Statutory Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Federal tax benefit at statutory rate	$ 1,455,816	$ 4,385,479
State and local taxes, net of federal benefit (expense)	(267,997)	325,966
Change in valuation allowance	(1,629,786)	(4,030,864)
Incentive stock options	(513,708)	(421,366)
Transaction costs	0	(5,291)
Escrow refund	255,000	0
Change in fair value of warrants liability	553,951	776,337
Other	(28,914)	(44,719)
Reserve for uncertain tax position	0	164,127
Other	167,635	(262,660)
Income tax (expense) benefit	$ (8,003)	$ 887,009