Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	200,000	400,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity (decifit), Including Portion Attributable to Noncontrolling Interest	$ 94,754
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures	858
Stock Issued During Period, Value, New Issues	13,287
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	100
Dividends, Preferred Stock	(800)	$ (800)
Foreign currency translation adjustments	(218)	(288)
Net Loss	(11,779)	(4,154)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	96,202
Proceeds from Issuance of Common Stock	13,306	$ 8,488
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity (decifit), Including Portion Attributable to Noncontrolling Interest	95,309
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures	858
Stock Issued During Period, Value, New Issues	13,287
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	100
Dividends, Preferred Stock	(800)
Foreign currency translation adjustments	(218)
Net Loss	(11,712)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	96,824
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity (decifit), Including Portion Attributable to Noncontrolling Interest	(555)
Net Loss	(67)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	$ (622)
Common Stock [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues	2,127,635
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from Issuance of Common Stock	$ 13,300
NRG Energy [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	200,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 40.20