Fair Value Measurements - Schedule of Fair Value Assumptions of Warrants and Embedded Conversion Feature (Details) - $ / shares	3 Months Ended	12 Months Ended
Jan. 31, 2018	Oct. 31, 2017
Warrant Liability [Member]
Stock Price	$ 21.30	$ 25.87
Exercise price	$ 30.00	$ 30.00
Risk-free rate	2.053%	1.581%
Volatility	86.40%	96.00%
Term	1 year 7 months 21 days	1 year 10 months 21 days
Series F Conversion Feature [Member]
Stock Price	$ 21.30	$ 25.87
Exercise price	$ 27.50	$ 27.50
Risk-free rate	2.053%	1.581%
Volatility	86.40%	96.00%
Term	1 year 7 months 21 days	1 year 10 months 21 days

Agreed upon price for the exchange of the underlying asset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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