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Convertible Preferred Stock	12 Months Ended
Convertible Preferred Stock	Jan. 31, 2014
Equity [Abstract]
Convertible Preferred Stock	12. Convertible Preferred Stock Prior to the consummation of the Company’s initial public offering on July 3, 2012, the Company was authorized to issue up to 77,835,000 shares of $0.001 par value preferred stock. On July 3, 2012, in connection with the Company’s initial public offering of common stock, all of the Company’s then outstanding preferred stock was converted into 8,529,366 shares of common stock, and the Company’s certificate of incorporation was amended to, among other things, provide that the Company is authorized to issue up to 5,000,000 shares of $0.001 par value preferred stock.