| Courseware (Schedule of Courseware, Net) (Details) - USD ($) | Apr. 30, 2017 | Apr. 30, 2016 | 
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Intangible asset, net | $ 145,477 | $ 194,932 | 
| Courseware [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Intangible asset, gross | 271,777 | 319,267 | 
| Accumulated amortization | (126,300) | (124,335) | 
| Intangible asset, net | $ 145,477 | $ 194,932 | 
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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/presentationRef 
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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/presentationRef 
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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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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
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