| Leases - Schedule of Operating Lease Liabilities (Details) - USD ($) | Jan. 31, 2021 | May 01, 2019 | 
|---|---|---|
| Leases [Abstract] | ||
| Operating office leases | $ 17,673,056 | |
| Reduction of lease liabilities | (5,602,554) | |
| Present value of operating lease obligations | $ 12,070,502 | $ 8,000,000 | 
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- Definition Operating Lease, Liability, Accumulated Reduction No definition available. 
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- Definition Operating Lease, Liability, Gross No definition available. 
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- References No definition available. 
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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