| Property and Equipment (Schedule Of Depreciation And Amortization Expense) (Details) - USD ($) | 12 Months Ended | |
|---|---|---|
| Apr. 30, 2016 | Apr. 30, 2015 | |
| Property and equipment: | 听 | 听 | 
| Depreciation and Amortization Expense | $ 529,300 | $ 449,173 | 
| Software Amortization Expense | $ 481,230 | $ 409,630 | 
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- Definition Amount of expense for amortization of capitalized computer software costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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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://www.xbrl.org/2003/role/presentationRef 
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- References No definition available. 
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