9. Stock-Based Compensation (Details)	12 Months Ended
Oct. 31, 2020 USD ($) shares
Text Block [Abstract]
Unrecognized stock-based compensation costs expected to be recognized over a weighted average period \| $	$ 784,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares \| shares	881,000
Unrecognized stock-based compensation Weighted average period	1 year 9 months 18 days

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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