Significant Accounting Policies (Tables)  | 
12 Months Ended | |||||||||||||||||||||
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Apr. 30, 2019  | ||||||||||||||||||||||
| Accounting Policies [Abstract] | Ìý | |||||||||||||||||||||
| Schedule of Property and Equipment Useful Lives | 
 Depreciation is computed using the straight-line method over the estimated useful lives of the related assets per the following table. Ìý 
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| X | ||||||||||
- Definition Tabular disclosure of useful life of physical assets used in the normal conduct of business and not intended for resale. No definition available. 
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| X | ||||||||||
- References No definition available. 
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