Basis of Presentation (Details 1) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Reconciliation of beginning and ending balances of assets and liabilities measured at fair value using significant observable inputs
Warrant asset as of January 1, 2012	$ 388,540
Increase in fair value of warrants	12,660
Warrant asset as of June 30, 2012	401,200
Warrant liability as of January 1, 2012	279,302
Expiration of CDC warrants
Increase in fair value of warrants	5,358,699
Warrant liability as of June 30, 2012	$ 5,638,001
Increase in number of warrants
Number of warrants assets as of January 1, 2012	2,000,000	2,000,000
Number of expiration of CDC warrants	(1,000,000)
Increase in number of warrants
Number of warrants liability as of June 30, 2012	2,246,301		3,246,301