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Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2012
Stockholders' Equity [Abstract]  
Summary of common and preferred stock authorized, issued and outstanding
                                 
    Authorized     Issued     Outstanding as of  
        June 30,
2012		     December 31,
2011		  

Common Stock, par $0.001

     300,000,000       134,968,394       134,968,394       134,968,394  

Series A Preferred Stock, par $0.001

     1,000       817       —         —    

Series B Preferred Stock, par $0.001

     1,000       750       —         —    

Series C Preferred Stock, par $0.001

     1,091       1,091       26       26  

Series D Preferred Stock, par $0.001

     1,966,292       1,966,292       —         —    
Summary of warrants outstanding
                                             
              As of June 30, 2012     As of December 31, 2011  

Issued in Connection With:

   Exercise
Price		     Expiration Date   Number of
Warrants		     Common Stock
Warrant Liability		     Number of
Warrants		     Common Stock
Warrant Liability		  

December 2011 financing

   $ 0.65     December 6, 2016     5,774,784     $ 2,078,922       5,774,784     $ 1,963,427  

January 2011 financing

   $ 1.40     January 27, 2016     10,565,200       2,958,255       10,565,200       3,169,560  

July 2009 financing

   $ 3.38     July 1, 2014     333,333       1,333       333,333       43,332  

Warrants assumed in June 2009 Merger

   $   0.05-1.28     March 24, 2013-
April 28, 2016		     4,920,527       —         4,920,530       —    

August 2007 consulting services

   $ 3.00     August 3, 2012     150,000       —         150,000       —    
               

 

 

    

 

 

    

 

 

    

 

 

  

Total

                 21,743,844     $ 5,038,510       21,743,847     $ 5,176,319