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Financial Instruments - Financial instruments measured at fair value on a recurring basis (Details)	Oct. 31, 2020 USD ($)
Fair value of derivatives	$ 812,390
Level 1
Fair value of derivatives
Level 2
Fair value of derivatives	812,390
Level 3
Fair value of derivatives

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

+ Details

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