| Property and Equipment (Schedule Of Depreciation And Amortization Expense) (Details) - USD ($) | 3 Months Ended | |
|---|---|---|
| Jul. 31, 2019 | Jul. 31, 2018 | |
| Property and equipment: | 听 | 听 | 
| Depreciation and amortization Expense | $ 312,432 | $ 204,335 | 
| Software amortization Expense | $ 170,189 | $ 143,774 | 
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- Definition Amount of expense for amortization of capitalized computer software costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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