Derivative Financial Instruments (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components of (expense) income of derivative financial instruments
Derivative Gain	$ (5,594,152)	$ 3,463,453	$ 3,126,771
Free standing derivatives (warrants) [Member]
Components of (expense) income of derivative financial instruments
Derivative Gain	(338,500)	(910,231)	277,631
Free Standing Derivatives Warrants Liabilities [Member]
Components of (expense) income of derivative financial instruments
Derivative Gain	$ (5,255,652)	$ 4,373,684	$ 2,849,140