Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Financial instruments measured at fair value on a recurring basis (Details)

v3.20.4
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