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Warrant Liability (Details 3) (USD $)
 3 Months Ended
Sep. 30, 2012
Summary of changes in fair value of warrant liability  
Number of warrants exercised (1,445,400)
Fair value of warrants exercised $ (728,106)
Number of warrants, ending balance 10,689,143
Series A Warrants [Member]
  
Summary of changes in fair value of warrant liability  
Number of warrants, beginning balance 10,700,000
Fair value of warrant liability, beginning balance 5,390,018
Fair value, changes in fair value at period end 9,586,748
Fair value of warrant liability, ending balance $ 14,248,660
Number of warrants, ending balance 9,254,600