Basis of Presentation (Details 1) (USD $)	3 Months Ended
	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	388,540
Warrant liability as of January 1, 2012		279,302
Expiration of CDC warrants	0
Increase in fair value of warrants	5,358,699
Warrant liability as of June 30, 2012	$ 5,638,001	$ 279,302
Number of warrant assets as of January 1, 2012		2,000,000
Increase in number of warrants	0
Number of warrant assets as of June 30, 2012	2,000,000	2,000,000
Number of warrant liability as of January 1, 2012		3,246,301
Number of expiration of CDC warrants	(1,000,000)
Increase in number of warrants	0
Number of warrant liability as of June 30, 2012	2,246,301	3,246,301