Loss Per Share - Schedule of Potentially Dilutive Securities Excluded from the Diluted Loss Per Share Calculation (Details) - shares
 9 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation 30,836,501 34,222,346
Series C Warrants [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation 11,569,364 12,000,000
Series D Warrants [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation   10,622,460
Series A Warrant [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation 7,680,000 7,680,000
Outstanding Options To Purchase Common Stock [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation 323,533 316,330
Unvested Restricted Stock Awards [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation 1,164,248 2,004,330
Unvested Restricted Stock Units [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation 3,281,744 1,130,015
Series C Preferred Shares [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation [1] 6,348,401 0
Series B Cumulative Preferred Stock [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation 454,043 454,043
Series 1 Preferred Shares [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from diluted loss per share calculation 15,168 15,168
[1] The number of shares of common stock issuable upon conversion of the Series C Preferred Stock was calculated using the stated value outstanding on July 31, 2018 of $11.7 million (original stated value of $33.5 million less the stated value of conversions to date through July 31, 2018 totaling $21.8 million) divided by the conversion price of $1.84. The actual number of shares issued could vary depending on the actual market price of the Company’s common shares on the date of such conversions. Refer also to Note 19, “Subsequent Events” for information regarding the reduction of the conversion price of the Series C Preferred Stock subsequent to July 31, 2018.