Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	4,300,000	5,750,000	4,300,000	5,750,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 3.35		$ 3.35
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity (decifit), Including Portion Attributable to Noncontrolling Interest			$ 98,449
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures			2,317
Stock Issued During Period, Value, New Issues			21,428
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			(534)
Dividends, Preferred Stock	$ (800)	$ (800)	(2,400)	$ (2,400)
Foreign currency translation adjustments	(64)	(43)	(404)	67
Net Loss	(6,628)	$ (7,139)	(20,779)	(33,993)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	$ 98,077		98,077
Proceeds from Issuance of Common Stock			$ 22,061	$ 99,728
Class of Warrant or Right, Unissued	1,250,000		1,250,000
Class of Warrant or Right, Outstanding	2,250,000		2,250,000
Class of Warrant or Right, Weighted Average Strike Price of Warrants or Rights Outstanding	$ 1.98		$ 1.98
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity (decifit), Including Portion Attributable to Noncontrolling Interest			$ 99,987
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures			2,317
Stock Issued During Period, Value, New Issues			21,428
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			(534)
Dividends, Preferred Stock			(2,400)
Foreign currency translation adjustments			(404)
Reclass of noncontrolling interest due to liquidation of subsidiary			(1,308)
Net Loss			(20,499)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	$ 98,587		98,587
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity (decifit), Including Portion Attributable to Noncontrolling Interest			(1,538)
Reclass of noncontrolling interest due to liquidation of subsidiary			1,308
Net Loss			(280)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	$ (510)		$ (510)
Common Stock [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues			15,518,847
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from Issuance of Common Stock			$ 21,400
NRG Energy, Inc. [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,000,000		2,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Capital Shares Reserved for Future Issuance	5,000,000		5,000,000