| Property and Equipment - Schedule of Software (Details) - Software - USD ($) | Jan. 31, 2020 | Apr. 30, 2019 | 
|---|---|---|
| Property, Plant and Equipment [Line Items] | 听 | 听 | 
| Software | $ 5,725,500 | $ 4,314,198 | 
| Accumulated depreciation | (1,911,096) | (1,351,193) | 
| Net intangible assets | $ 3,814,404 | $ 2,963,005 | 
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Details 
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