Quarterly report pursuant to sections 13 or 15(d)

Private Placements and Public Offerings (Details 2)

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Private Placements and Public Offerings (Details 2) (USD $)
1 Months Ended 3 Months Ended 9 Months Ended 63 Months Ended 11 Months Ended 0 Months Ended 0 Months Ended
Jun. 30, 2011
Mar. 31, 2011
Apr. 30, 2012
Apr. 30, 2012
Apr. 30, 2013
Dec. 12, 2012
Mar. 28, 2012
Jun. 24, 2011
Jun. 24, 2011
Common Stock
Mar. 28, 2012
Warrants
Jun. 24, 2011
Warrants issued with March 2011 Private Placement
Mar. 28, 2012
Series A Warrant
Jun. 24, 2011
Series B Warrant
Derivative Liabilities                          
Proceeds available for allocation                 $ 0       $ 0
Estimated fair value of derivative liabilities             657,604       3,808,590 657,604  
Total proceeds of private placement 3,000,000 1,092,000                      
Fair value of derivative liabilities in excess of proceeds         (808,590)           808,590    
Adjustments to fair value of derivative liabilities     $ 1,613,329 $ 4,192,781 $ 3,150,985                
Derivative liabilities valuation assumptions using Monte Carlo valuation model                          
Closing price per share of common stock (in dollars per share)               $ 0.75   $ 0.22      
Exercise price per share (in dollars per share)                   $ 0.50      
Expected volatility (as a percent)                   125.00%      
Risk-free interest rate (as a percent)                   1.05%      
Floor price (in dollars per share)           $ 0.26       $ 0.50      
Remaining expected term of underlying securities                   4 years 2 months 26 days