Stockholders' Equity (Deficit) - Summary of Common Stock Warrants Activity (Details) - Common Stock Warrants	12 Months Ended
	Jan. 31, 2016 shares
Class Of Warrant Or Right [Line Items]
Common Warrants Outstanding, Beginning Balance	87,828
Add: Conversion of Preferred Series Alpha warrants to common warrants on IPO	87,325
Less: Common warrants exercised to common stock	(30,573)
Less: Common warrants terminated	(46,649)
Common Warrants Outstanding, Ending Balance	97,931