Loss Per Share - Schedule of Potentially Dilutive Securities Excluded from the Diluted Loss Per Share Calculation (Details) - shares		9 Months Ended
		Jul. 31, 2019	Jul. 31, 2018
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from diluted loss per share calculation		1,226,753	2,569,709
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		964,114	964,114
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			640,000
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		24,927	26,961
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		28,549	97,021
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		168,553	273,479
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]		529,033
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]	1,509
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		37,837	37,837
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		1,264	1,264

[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 July 31, 2018 of $11.7 million divided by the reduced conversion price of $22.08. All Series C Preferred Stock was converted prior to July 31, 2019.

[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 July 31, 2019 of $25.0 thousand divided by the conversion price of $16.56. 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.