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Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical) (USD $)
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1 Months Ended | 5 Months Ended | 8 Months Ended | 9 Months Ended | 12 Months Ended | 54 Months Ended | 63 Months Ended | |
|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2011
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Dec. 31, 2012
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Mar. 28, 2012
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Apr. 30, 2013
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Apr. 30, 2012
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Jul. 31, 2012
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Jul. 31, 2012
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Apr. 30, 2013
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| Consolidated Statement of Stockholders' Equity (Deficit) | ||||||||
| Public offering on March 28, 2012, issuance costs | $ 210,000 | $ 504,000 | $ 542,500 | $ 504,000 | $ 542,500 | $ 542,500 | $ 542,500 | $ 1,046,500 |