Financial Instruments - Financial instruments measured at fair value on a recurring basis (Details) |
Jan. 31, 2021
USD ($)
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| Fair value of derivatives | $ 9,144,226 |
| Level 1 | |
| Fair value of derivatives | |
| Level 2 | |
| Fair value of derivatives | 9,144,226 |
| 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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