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Significant Accounting Policies (Details) (USD $)
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3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
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Oct. 31, 2013
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Oct. 31, 2012
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Oct. 31, 2013
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Oct. 31, 2012
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Apr. 30, 2013
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| Significant Accounting Policies [Abstract] | |||||
| Restricted cash | $ 265,444 | $ 265,444 | $ 265,173 | ||
| Letter of credit interest rate | 0.20% | 0.20% | |||
| Amount Reclassified From Deferred Revenue To Title Four Funds In Transit | 257,378 | 257,378 | 253,883 | ||
| Amount reclassified from cost of revenues to general and administrative expenses | 62,250 | 113,250 | |||
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Stock Options [Member]
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||
| Antidilutive securities | 9,433,092 | 5,942,931 | |||
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Warrant [Member]
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||
| Antidilutive securities | 18,249,528 | 5,887,090 | |||
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Convertible Debt [Member]
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||
| Antidilutive securities | 8,093,985 | 1,357,143 | |||
| Convertible debt | $ 3,040,000 | $ 800,000 | $ 3,040,000 | $ 800,000 | |