Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Oct. 31, 2014	Jan. 31, 2014
Allowance for doubtful accounts	$ 269	$ 305
Class A common stock [Member]
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	800,000,000	800,000,000
Common stock, shares issued	58,475,649	15,044,750
Common stock, shares outstanding	58,475,649	15,044,750
Class B common stock [Member]
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	190,000,000	190,000,000
Common stock, shares issued	71,933,469	109,746,795
Common stock, shares outstanding	71,933,469	109,746,795