Shareholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	4,300,000	5,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 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	761
Stock Issued During Period, Value, New Issues	7,887
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	157
Dividends, Preferred Stock	(800)	(800)
Foreign currency translation adjustments	(288)	(20)
Net Loss	(4,154)	(10,815)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	102,012
Proceeds from Issuance of Common Stock	8,488	33,755
Class of Warrant or Right, Unissued	1,250,000
Class of Warrant or Right, Outstanding	2,250,000
Class of Warrant or Right, Weighted Average Strike Price of Warrants or Rights Outstanding	$ 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	761
Stock Issued During Period, Value, New Issues	7,887
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	157
Dividends, Preferred Stock	(800)
Foreign currency translation adjustments	(288)
Net Loss	(4,066)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	103,638
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity (decifit), Including Portion Attributable to Noncontrolling Interest	(1,538)
Net Loss	(88)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	(1,626)
Common Stock [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues	4,679,350
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from Issuance of Common Stock	$ 7,900
NRG Energy, Inc. [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Capital Shares Reserved for Future Issuance	5,000,000