Loss Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended									12 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Jan. 31, 2012	Oct. 31, 2014		Oct. 31, 2013		Oct. 31, 2012		Oct. 31, 2011
Numerator [Abstract]
Net loss	$ (4,890)	$ (7,139)	$ (16,039)	$ (10,815)	$ (9,997)	$ (5,814)	$ (7,629)	$ (11,879)		$ (38,883)		$ (35,319)		$ (35,906)
Net Income (Loss) Attributable to Noncontrolling Interest										758		961		411
Dividends, Preferred Stock	(800)	(800)	(800)	(800)	(800)	(800)	(800)	(800)		(3,200)		(3,200)		(3,201)
Net loss to common shareholders	$ (5,500)	$ (7,778)	$ (16,643)	$ (11,404)	$ (10,500)	$ (6,412)	$ (8,165)	$ (12,481)		$ (41,325)		$ (37,558)		$ (38,696)
Demoninator [Abstract]
Weighted Average Number of Shares Outstanding, Basic										245,686,983		186,525,001		165,471,261
Weighted Average Number Diluted Shares Outstanding Adjustment										0	[1]	0	[1]	0	[1]
Weighted Average Number of Shares Outstanding, Diluted									186,525,001	245,686,983		186,525,001		165,471,261
Earnings Per Share, Basic										$ (0.17)		$ (0.20)		$ (0.23)
Earnings Per Share, Diluted										$ (0.17)	[1]	$ (0.20)	[1]	$ (0.23)	[1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	3,028,080				3,181,464					3,028,080		3,181,464				3,100,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	5,750,000				5,000,000					5,750,000		5,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 3.35									$ 3.35

[1] Due to the net loss to common shareholders in each of the years presented above, diluted earnings per share was computed without consideration to potentially dilutive instruments as their inclusion would have been antidilutive. Potentially dilutive instruments include stock options, warrants, unvested RSAs and RSUs, convertible preferred stock and convertible notes. At October 31, 2014, 2013 and 2012, there were options to purchase 3.0 million, 3.2 million and 3.1 million shares of common stock, respectively and at October 31, 2014 and 2013, there were warrants to purchase 5.75 million and 5.0 million, respectively shares of common stock that were not included in the calculation of diluted earnings per share as they would be antidiulutive. There were no warrants outstanding at October 31, 2012.