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Pro forma results of acquisitions (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 31, 2021 | Oct. 31, 2021
Series Of Individually Immaterial Business Acquisitions 1 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Revenues | $ 1,863,239 | $ 3,259,990
Net Loss | (2,740,601) | (4,298,373)
Series Of Individually Immaterial Business Acquisitions 4 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Revenues | 104,016 | 416,063
Net Loss | (301,783) | (1,467,770)
Series of Individually Immaterial Business Acquisitions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Revenues | 1,967,255 | 3,676,053
Net Loss | $ (3,042,384) | $ (5,766,143)

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