| Courseware (Schedule of Courseware, Net) (Details) (Courseware [Member], USD $) | Jul. 31, 2013 | Apr. 30, 2013 | 
|---|---|---|
| Courseware [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Courseware | $ 2,098,038 | $ 2,097,538 | 
| Accumulated amortization | (1,919,914) | (1,889,443) | 
| Total | $ 178,124 | $ 208,095 | 
| X | ||||||||||
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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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| X | ||||||||||
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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 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
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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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