Loss Per Share - Schedule of Potentially Dilutive Securities Excluded from the Diluted Loss Per Share Calculation (Details) - shares		3 Months Ended
		Jan. 31, 2019	Jan. 31, 2018
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from diluted loss per share calculation		60,180,507	37,016,355
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	11,573,364
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			525,308
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		323,486	281,175
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		1,100,591	1,789,581
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		3,400,922	1,185,001
Series C Preferred Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from diluted loss per share calculation	[1]	17,211,968	13,512,717
Series D Preferred Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from diluted loss per share calculation	[2]	18,424,965
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	15,166

[1] The number of shares of common stock issuable upon conversion of the Series C Preferred Stock was calculated using the liquidation preference value outstanding on January 31, 2019 of $7.5 million divided by the reduced conversion price of $0.43 and the liquidation preference of $24.2 million divided by the conversion price of $1.84 as of January 31, 2018. 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.

[2] The number of shares of common stock issuable upon conversion of the Series D Preferred Stock was calculated using the liquidation preference value outstanding on January 31, 2019 of $25.4 million divided by the conversion price of $1.38. 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.