CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Apr. 30, 2016	Oct. 31, 2015
Statement of Financial Position [Abstract]
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	8,413,630	9,025,265
Preferred Stock, Shares Outstanding	8,413,630	9,025,265
Preferred Stock, Liquidation Preference, Value	$ 5,561	$ 5,968
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	13,583,875	11,109,293
Common stock, shares outstanding	13,583,875	11,109,293