INCOME TAXES - Reconciliation of Income Tax Provision (Details) $ in Thousands	12 Months Ended
	Jan. 31, 2016 USD ($)
INCOME TAXES
Federal statutory rate	34.00%
Reconciliation of income taxes:
Income tax benefit computed at U.S. statutory rate	$ (5,302)
State income tax (net of federal benefit)	(838)
Stock-based compensation	200
Warrant valuation	148
Research and development credits	(128)
Change in valuation allowance	5,904
Other	20
Income tax provision	$ 4