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Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment, Useful Life (Details)
12 Months Ended
Apr. 30, 2021
Computer Equipment & Software [Member]  
Property and equipment, useful life (Year) 3 years
Equipment Under Capitalized Lease [Member]  
Property and equipment, useful life Over the life of the lease
Leasehold Improvements [Member]  
Property and equipment, useful life Shorter of the estimated useful life or lease term
Minimum [Member]  
Property and equipment, useful life (Year) 3 years
Minimum [Member] | Equipment [Member]  
Property and equipment, useful life (Year) 5 years
Minimum [Member] | Office Furniture & Fixtures [Member]  
Property and equipment, useful life (Year) 3 years
Maximum [Member]  
Property and equipment, useful life (Year) 7 years
Maximum [Member] | Equipment [Member]  
Property and equipment, useful life (Year) 7 years
Maximum [Member] | Office Furniture & Fixtures [Member]  
Property and equipment, useful life (Year) 7 years