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Financial Instruments - Financial instruments measured at fair value on a recurring basis (Details) | Oct. 31, 2020 USD ($)
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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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