Consolidated Statements of Convertible Preferred Stock and Stockholders' Deficit (Parenthetical) - Series F Convertible Preferred Stock $ in Thousands	12 Months Ended
	Jan. 31, 2016 USD ($) $ / shares
Convertible preferred stock issuance price per share | $ / shares	$ 44.04
Convertible preferred stock, net of issuance cost | $	$ 1,784