Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2016	Oct. 31, 2015
Statement of Financial Position [Abstract]
Preferred Stock, Liquidation Preference, Value	$ 64,020	$ 64,020
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	39,583,333	39,583,333
Common stock, shares issued	28,104,525	25,964,710
Common stock, shares outstanding	28,104,525	25,964,710
Treasury stock, shares	5,845	5,845