Loss Per Share - Schedule of Anti-dilutive Potential Shares Outstanding Activity (Details) - shares	6 Months Ended
Apr. 30, 2018	Apr. 30, 2017
Shares Issuable Upon Conversion of Preferred Stock [Member]
Antidilutive shares		9,281,275
Shares Issuable Upon Exercise of Stock Options [Member]
Antidilutive shares	4,886,069	3,028,512
Non-vested Shares Under Restricted Stock Grants [Member]
Antidilutive shares	220,204	380,341

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration