Shareholders' Equity - Schedule of Stockholders Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends	$ (800)	$ (800)	$ (1,600)	$ (1,600)
Foreign currency translation adjustments	32	420	(38)	202
Net loss	(13,238)	$ (15,414)	(26,923)	$ (27,193)
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest			114,396
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures			2,226
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			14
Preferred stock dividends			(1,600)
Foreign currency translation adjustments			(38)
Net loss			(26,923)
Stockholders' equity (deficit), Including Portion Attributable to Noncontrolling Interest	$ 100,502		100,502
Common Stock and Pre-Funded Warrants [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, New Issues			$ 12,427