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Fair Value of Financial Instruments - Fair value of the company's financial instruments that are required to be measured at fair value (Details) (USD $)
Jun. 30, 2012
Jun. 30, 2011
Level 1
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents $ 141,107 $ 83,267
Common stock warrant liability, warrants exercisable at $2.6058 from September 18, 2011 through September 18, 2016      
Common stock warrant liability, warrants exercisable at $5.90 through September 14, 2013      
Level 2
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents      
Common stock warrant liability, warrants exercisable at $2.6058 from September 18, 2011 through September 18, 2016      
Common stock warrant liability, warrants exercisable at $5.90 through September 14, 2013      
Level 3
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents      
Common stock warrant liability, warrants exercisable at $2.6058 from September 18, 2011 through September 18, 2016 917,440 2,638,629
Common stock warrant liability, warrants exercisable at $5.90 through September 14, 2013 1,126 93,624
Total
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents 141,107 83,267
Common stock warrant liability, warrants exercisable at $2.6058 from September 18, 2011 through September 18, 2016 917,440 2,638,629
Common stock warrant liability, warrants exercisable at $5.90 through September 14, 2013 $ 1,126 $ 93,624