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Loss Per Share - Schedule of Potentially Dilutive Securities Excluded from the Diluted Loss Per Share Calculation (Details) - shares		3 Months Ended
		Jan. 31, 2018	Jan. 31, 2017
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Share-based compensation arrangement by share-based payment award, options, outstanding, number		281,175	245,820
Antidilutive securities excluded from computation of earnings per share, amount		35,831,354	9,465,736
Series C Warrants [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Class of warrant or right, number of securities called by warrants or rights		11,573,364
Series D Warrants [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Class of warrant or right, number of securities called by warrants or rights		525,308
Series A Warrant [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Class of warrant or right, number of securities called by warrants or rights		7,680,000	7,680,000
NRG Warrant [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Class of warrant or right, number of securities called by warrants or rights			166,666
Unvested Restricted Stock Awards [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number		1,789,581	904,041
Series C Preferred Shares [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Convertible preferred stock, shares issued upon conversion	[1]	13,512,717	0
Series B Cumulative Preferred Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Convertible preferred stock, shares issued upon conversion		454,043	454,043
Series 1 Preferred Shares [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Convertible preferred stock, shares issued upon conversion		15,166	15,166
[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 January 31, 2018 of $24.2 million (original stated value of $33.5 million less the stated value of conversions to date through January 31, 2018 totaling $9.3 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.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Number of shares issued for each share of convertible preferred stock that is converted.

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